ImageBitmap Options - Revision history

Xidachen at 20:42, 10 February 2016

2016-02-10T20:42:37Z

← Older revision		Revision as of 20:42, 10 February 2016
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	partial interface ImageBitmapFactories {		partial interface ImageBitmapFactories {
	Promise<ImageBitmap> createImageBitmap(ImageBitmapSource image, ImageBitmapOptions options);		Promise<ImageBitmap> createImageBitmap(ImageBitmapSource image, optional ImageBitmapOptions options);
	Promise<ImageBitmap> createImageBitmap(ImageBitmapSource image, long sx, long sy, long sw, long sh, ImageBitmapOptions options);		Promise<ImageBitmap> createImageBitmap(ImageBitmapSource image, long sx, long sy, long sw, long sh, optional ImageBitmapOptions options);
	};		};

Xidachen at 20:12, 10 February 2016

2016-02-10T20:12:21Z

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 * <cite>[https://lists.w3.org/Archives/Public/public-whatwg-archive/2013Jun/0114.html June 2013 whatwg thread]</cite>
 * <cite>[https://lists.w3.org/Archives/Public/public-whatwg-archive/2013Jul/0075.html July 2013 whatwg thread]</cite>
 == Proposed Solutions ==

Xidachen at 19:52, 10 February 2016

2016-02-10T19:52:42Z

← Older revision		Revision as of 19:52, 10 February 2016
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	* enum imageOrientation, default = 'none' <blockquote><p>'none': Do not change orientation.</p><p>'flipY': Flip image vertically, disregarding image orientation meta data (EXIF or other), if any.</p></blockquote>		* enum imageOrientation, default = 'none' <blockquote><p>'none': Do not change orientation.</p><p>'flipY': Flip image vertically, disregarding image orientation meta data (EXIF or other), if any.</p></blockquote>
	* enum colorspaceConversion, default = 'default' <blockquote><p>'none': The ImageBitmap must be created by decoding the source image media without performing any colorspace conversions. This means that the image decoding algorithm must ignore color profile meta-data embedded in the image source as well as the display device color profile. colorspaceConversion only applies when creating ImageBitmaps from bitmap media data (i.e. blobs and image elements with non-vector images)</p> <p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p></blockquote>		* enum colorspaceConversion, default = 'default' <blockquote><p>'none': The ImageBitmap must be created by decoding the source image media without performing any colorspace conversions. This means that the image decoding algorithm must ignore color profile meta-data embedded in the image source as well as the display device color profile. colorspaceConversion only applies when creating ImageBitmaps from bitmap media data (i.e. blobs and image elements with non-vector images)</p> <p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p></blockquote>
	* enum premultiplyAlpha, default = 'default' <blockquote><p>'none': Image sources that have raw image data that is not premultiplied by alpha will be left untouched and image sources that are premultiplied by alpha will have their color components divided by alpha.</p><p>'~~true~~': Image sources that have raw image data that is not premultiplied by alpha will have their color components multiplied by alpha and image sources that are premultiplied by alpha will be left untouched.</p><p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p><p>When premultiplyAlpha is set to 'none', the division by alpha may result in loss of precision, which must be avoided whenever possible. For example, if the image source is a blob or an image element, the decoded image may already be available in premultipled form. Rather than divide the already decoded data, the user agent must re-decode the image without premultiplying, thus ensuring that the ImageBitmap is delivered with the highest quality data.</p><p>Image sources that do not have an alpha channel are not affected by this option.</p><p>Caution: 2D Canvases may or may not be stored in premultipled form, depending on the implementation.</p>		* enum premultiplyAlpha, default = 'default' <blockquote><p>'none': Image sources that have raw image data that is not premultiplied by alpha will be left untouched and image sources that are premultiplied by alpha will have their color components divided by alpha.</p><p>'premultiply': Image sources that have raw image data that is not premultiplied by alpha will have their color components multiplied by alpha and image sources that are premultiplied by alpha will be left untouched.</p><p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p><p>When premultiplyAlpha is set to 'none', the division by alpha may result in loss of precision, which must be avoided whenever possible. For example, if the image source is a blob or an image element, the decoded image may already be available in premultipled form. Rather than divide the already decoded data, the user agent must re-decode the image without premultiplying, thus ensuring that the ImageBitmap is delivered with the highest quality data.</p><p>Image sources that do not have an alpha channel are not affected by this option.</p><p>Caution: 2D Canvases may or may not be stored in premultipled form, depending on the implementation.</p>
	</blockquote>		</blockquote>

Xidachen at 19:49, 10 February 2016

2016-02-10T19:49:41Z

← Older revision		Revision as of 19:49, 10 February 2016
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	* enum imageOrientation, default = 'none' <blockquote><p>'none': Do not change orientation.</p><p>'flipY': Flip image vertically, disregarding image orientation meta data (EXIF or other), if any.</p></blockquote>		* enum imageOrientation, default = 'none' <blockquote><p>'none': Do not change orientation.</p><p>'flipY': Flip image vertically, disregarding image orientation meta data (EXIF or other), if any.</p></blockquote>
	* enum colorspaceConversion, default = 'default' <blockquote><p>'none': The ImageBitmap must be created by decoding the source image media without performing any colorspace conversions. This means that the image decoding algorithm must ignore color profile meta-data embedded in the image source as well as the display device color profile. colorspaceConversion only applies when creating ImageBitmaps from bitmap media data (i.e. blobs and image elements with non-vector images)</p> <p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p></blockquote>		* enum colorspaceConversion, default = 'default' <blockquote><p>'none': The ImageBitmap must be created by decoding the source image media without performing any colorspace conversions. This means that the image decoding algorithm must ignore color profile meta-data embedded in the image source as well as the display device color profile. colorspaceConversion only applies when creating ImageBitmaps from bitmap media data (i.e. blobs and image elements with non-vector images)</p> <p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p></blockquote>
	* enum premultiplyAlpha, default = 'default' <blockquote><p>'none': Image sources that have raw image data that is not premultiplied by alpha will be left untouched and image sources that are premultiplied by alpha will have their color components divided by alpha.</p><p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p><p>When premultiplyAlpha is set to 'none', the division by alpha may result in loss of precision, which must be avoided whenever possible. For example, if the image source is a blob or an image element, the decoded image may already be available in premultipled form. Rather than divide the already decoded data, the user agent must re-decode the image without premultiplying, thus ensuring that the ImageBitmap is delivered with the highest quality data.</p><p>Image sources that do not have an alpha channel are not affected by this option.</p><p>Caution: 2D Canvases may or may not be stored in premultipled form, depending on the implementation.</p>		* enum premultiplyAlpha, default = 'default' <blockquote><p>'none': Image sources that have raw image data that is not premultiplied by alpha will be left untouched and image sources that are premultiplied by alpha will have their color components divided by alpha.</p><p>'true': Image sources that have raw image data that is not premultiplied by alpha will have their color components multiplied by alpha and image sources that are premultiplied by alpha will be left untouched.</p><p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p><p>When premultiplyAlpha is set to 'none', the division by alpha may result in loss of precision, which must be avoided whenever possible. For example, if the image source is a blob or an image element, the decoded image may already be available in premultipled form. Rather than divide the already decoded data, the user agent must re-decode the image without premultiplying, thus ensuring that the ImageBitmap is delivered with the highest quality data.</p><p>Image sources that do not have an alpha channel are not affected by this option.</p><p>Caution: 2D Canvases may or may not be stored in premultipled form, depending on the implementation.</p>
	</blockquote>		</blockquote>

Xidachen at 15:46, 9 February 2016

2016-02-09T15:46:48Z

← Older revision		Revision as of 15:46, 9 February 2016
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	==== Other potentially useful options ====		==== Other potentially useful options ====
	* enum imageOrientation, 'topLeft' and 'bottomLeft' <blockquote><p>'topLeft': identify visual orientation from image media meta data and re-order data so top-down, left-to-right processing for display results in correct visual orientation. If the image source is an ImageBitmap, the image data will be flipped vertically if and only if the source was created with bottomLeft orientation. If the image source holds no orientation information, the image orientation is not changed.</p><p>'bottomLeft': identify visual orientation from image media meta data and re-order data so bottom-up, left-to-right processing for display results in correct visual orientation. If the image source is an ImageBitmap, the image data will be flipped vertically if and only if the source was created with topLeft orientation. If the image source holds no orientation information, the image is flipped vertically.</p><blockquote>		* enum imageOrientation, 'topLeft' and 'bottomLeft' <blockquote><p>'topLeft': identify visual orientation from image media meta data and re-order data so top-down, left-to-right processing for display results in correct visual orientation. If the image source is an ImageBitmap, the image data will be flipped vertically if and only if the source was created with bottomLeft orientation. If the image source holds no orientation information, the image orientation is not changed.</p><p>'bottomLeft': identify visual orientation from image media meta data and re-order data so bottom-up, left-to-right processing for display results in correct visual orientation. If the image source is an ImageBitmap, the image data will be flipped vertically if and only if the source was created with topLeft orientation. If the image source holds no orientation information, the image is flipped vertically.</p><blockquote>
	* DOMString? crossOrigin: The crossOrigin option is a [[https://html.spec.whatwg.org/multipage/infrastructure.html#cors-settings-attribute CORS settings attribute]]. It is consulted when [[ImageBitmap Constructor taking URL\|constructing an ImageBitmap from the URL of an image]]. Because ImageBitmaps can only be constructed from same-origin resources, in order to construct an ImageBitmap from the URL of a cross-origin image resource, the crossOrigin option must be specified, and the server must grant the request. Otherwise the Promise returned from createImageBitmap will be rejected.		* DOMString? crossOrigin: The crossOrigin option is a [[https://html.spec.whatwg.org/multipage/infrastructure.html#cors-settings-attribute CORS settings attribute]]. It is consulted when [[ImageBitmap Constructor taking URL\|constructing an ImageBitmap from the URL of an image]]. Because ImageBitmaps can only be constructed from same-origin resources, in order to construct an ImageBitmap from the URL of a cross-origin image resource, the crossOrigin option must be specified, and the server must grant the request. Otherwise the Promise returned from createImageBitmap will be rejected. <blockquote><p>Note: this is a convenience feature. At this moment, using the process of XHR->Blob->ImageBitmap will achieve the same goal.</p></blockquote>
	* resizedWidth, resizedHeight: dimension to which the image should be resized. Could also be expressed using scale factors		* resizedWidth, resizedHeight: dimension to which the image should be resized. Could also be expressed using scale factors
	* resizeFilter: filtering method used for scaling the image (pixelated, low quality, high quality, etc.)		* resizeFilter: filtering method used for scaling the image (pixelated, low quality, high quality, etc.)

Xidachen at 21:31, 8 February 2016

2016-02-08T21:31:47Z

← Older revision		Revision as of 21:31, 8 February 2016
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	* enum imageOrientation, default = 'none' <blockquote><p>'none': Do not change orientation.</p><p>'flipY': Flip image vertically, disregarding image orientation meta data (EXIF or other), if any.</p></blockquote>		* enum imageOrientation, default = 'none' <blockquote><p>'none': Do not change orientation.</p><p>'flipY': Flip image vertically, disregarding image orientation meta data (EXIF or other), if any.</p></blockquote>
	* enum colorspaceConversion, default = 'default' <blockquote><p>'none': The ImageBitmap must be created by decoding the source image media without performing any colorspace conversions. This means that the image decoding algorithm must ignore color profile meta-data embedded in the image source as well as the display device color profile. colorspaceConversion only applies when creating ImageBitmaps from bitmap media data (i.e. blobs and image elements with non-vector images)</p> <p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p></blockquote>		* enum colorspaceConversion, default = 'default' <blockquote><p>'none': The ImageBitmap must be created by decoding the source image media without performing any colorspace conversions. This means that the image decoding algorithm must ignore color profile meta-data embedded in the image source as well as the display device color profile. colorspaceConversion only applies when creating ImageBitmaps from bitmap media data (i.e. blobs and image elements with non-vector images)</p> <p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p></blockquote>
	* enum premultiplyAlpha, default = 'default' <blockquote><p>'none': Image sources that have raw image data that is not premultiplied by alpha will be left untouched and image sources that are premultiplied by alpha will have their color components divided by alpha.</p><p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p><p>When premultiplyAlpha is set to 'none', the division by alpha may result in loss of precision, which must be avoided whenever possible. For example, if the image source is a blob or an image element, the decoded image may already be available in premultipled form. Rather than divide the already decoded data, the user agent must re-decode the image without premultiplying, thus ensuring that the ImageBitmap is delivered with the highest quality data.</p><p>Image sources that do not have an alpha channel are not affected by this option.</p><p>Caution: Canvases ~~are assumed to be premultiplied image sources, which~~ may not ~~always~~ be ~~accurate~~.</p>		* enum premultiplyAlpha, default = 'default' <blockquote><p>'none': Image sources that have raw image data that is not premultiplied by alpha will be left untouched and image sources that are premultiplied by alpha will have their color components divided by alpha.</p><p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p><p>When premultiplyAlpha is set to 'none', the division by alpha may result in loss of precision, which must be avoided whenever possible. For example, if the image source is a blob or an image element, the decoded image may already be available in premultipled form. Rather than divide the already decoded data, the user agent must re-decode the image without premultiplying, thus ensuring that the ImageBitmap is delivered with the highest quality data.</p><p>Image sources that do not have an alpha channel are not affected by this option.</p><p>Caution: 2D Canvases may or may not be stored in premultipled form, depending on the implementation.</p>
	</blockquote>		</blockquote>

Xidachen at 20:47, 8 February 2016

2016-02-08T20:47:44Z

← Older revision		Revision as of 20:47, 8 February 2016
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	* enum imageOrientation, default = 'none' <blockquote><p>'none': Do not change orientation.</p><p>'flipY': Flip image vertically, disregarding image orientation meta data (EXIF or other), if any.</p></blockquote>		* enum imageOrientation, default = 'none' <blockquote><p>'none': Do not change orientation.</p><p>'flipY': Flip image vertically, disregarding image orientation meta data (EXIF or other), if any.</p></blockquote>
	* enum colorspaceConversion, default = 'default' <blockquote><p>'none': The ImageBitmap must be created by decoding the source image media without performing any colorspace conversions. This means that the image decoding algorithm must ignore color profile meta-data embedded in the image source as well as the display device color profile. colorspaceConversion only applies when creating ImageBitmaps from bitmap media data (i.e. blobs and image elements with non-vector images)</p> <p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p></blockquote>		* enum colorspaceConversion, default = 'default' <blockquote><p>'none': The ImageBitmap must be created by decoding the source image media without performing any colorspace conversions. This means that the image decoding algorithm must ignore color profile meta-data embedded in the image source as well as the display device color profile. colorspaceConversion only applies when creating ImageBitmaps from bitmap media data (i.e. blobs and image elements with non-vector images)</p> <p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p></blockquote>
	* enum premultiplyAlpha, default = 'default' <blockquote><p>'none': Image sources that are premultiplied by alpha will have their color components divided by alpha ~~and image sources that are not premultiplied will be left untouched~~.</p><p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p><p>When premultiplyAlpha is set to 'none', the division by alpha may result in loss of precision, which must be avoided whenever possible. For example, if the image source is a blob or an image element, the decoded image may already be available in premultipled form. Rather than divide the already decoded data, the user agent must re-decode the image without premultiplying, thus ensuring that the ImageBitmap is delivered with the highest quality data.</p><p>Image sources that do not have an alpha channel are not affected by this option.</p><p>Caution: Canvases are assumed to be premultiplied image sources, which may not always be accurate.</p>		* enum premultiplyAlpha, default = 'default' <blockquote><p>'none': Image sources that have raw image data that is not premultiplied by alpha will be left untouched and image sources that are premultiplied by alpha will have their color components divided by alpha.</p><p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p><p>When premultiplyAlpha is set to 'none', the division by alpha may result in loss of precision, which must be avoided whenever possible. For example, if the image source is a blob or an image element, the decoded image may already be available in premultipled form. Rather than divide the already decoded data, the user agent must re-decode the image without premultiplying, thus ensuring that the ImageBitmap is delivered with the highest quality data.</p><p>Image sources that do not have an alpha channel are not affected by this option.</p><p>Caution: Canvases are assumed to be premultiplied image sources, which may not always be accurate.</p>
	</blockquote>		</blockquote>

Xidachen at 19:50, 8 February 2016

2016-02-08T19:50:54Z

← Older revision		Revision as of 19:50, 8 February 2016
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	==== Strongly desired options ====		==== Strongly desired options ====

	* enum imageOrientation, default = 'none' <blockquote><p>~~(Higher priority)~~ 'none': Do not change orientation.</p><p>~~(Higher priority)~~ 'flipY': Flip image vertically, disregarding image orientation meta data (EXIF or other), if any.</p><p>(Lower priority) 'topLeft': identify visual orientation from image media meta data and re-order data so top-down, left-to-right processing for display results in correct visual orientation. If the image source is an ImageBitmap, the image data will be flipped vertically if and only if the source was created with bottomLeft orientation. If the image source holds no orientation information, the image orientation is not changed.</p><p>(Lower priority) 'bottomLeft': identify visual orientation from image media meta data and re-order data so bottom-up, left-to-right processing for display results in correct visual orientation. If the image source is an ImageBitmap, the image data will be flipped vertically if and only if the source was created with topLeft orientation. If the image source holds no orientation information, the image is flipped vertically.</p></blockquote>		* enum imageOrientation, default = 'none' <blockquote><p>'none': Do not change orientation.</p><p>'flipY': Flip image vertically, disregarding image orientation meta data (EXIF or other), if any.</p></blockquote>
	* enum colorspaceConversion, default = 'default' <blockquote><p>'none': The ImageBitmap must be created by decoding the source image media without performing any colorspace conversions. This means that the image decoding algorithm must ignore color profile meta-data embedded in the image source as well as the display device color profile. colorspaceConversion only applies when creating ImageBitmaps from bitmap media data (i.e. blobs and image elements with non-vector images)</p> <p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p></blockquote>		* enum colorspaceConversion, default = 'default' <blockquote><p>'none': The ImageBitmap must be created by decoding the source image media without performing any colorspace conversions. This means that the image decoding algorithm must ignore color profile meta-data embedded in the image source as well as the display device color profile. colorspaceConversion only applies when creating ImageBitmaps from bitmap media data (i.e. blobs and image elements with non-vector images)</p> <p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p></blockquote>
	* enum premultiplyAlpha, default = 'default' <blockquote><p>'none': Image sources that are premultiplied by alpha will have their color components divided by alpha and image sources that are not premultiplied will be left untouched.</p><p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p><p>When premultiplyAlpha is set to 'none', the division by alpha may result in loss of precision, which must be avoided whenever possible. For example, if the image source is a blob or an image element, the decoded image may already be available in premultipled form. Rather than divide the already decoded data, the user agent must re-decode the image without premultiplying, thus ensuring that the ImageBitmap is delivered with the highest quality data.</p><p>Image sources that do not have an alpha channel are not affected by this option.</p><p>Caution: Canvases are assumed to be premultiplied image sources, which may not always be accurate.</p>		* enum premultiplyAlpha, default = 'default' <blockquote><p>'none': Image sources that are premultiplied by alpha will have their color components divided by alpha and image sources that are not premultiplied will be left untouched.</p><p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p><p>When premultiplyAlpha is set to 'none', the division by alpha may result in loss of precision, which must be avoided whenever possible. For example, if the image source is a blob or an image element, the decoded image may already be available in premultipled form. Rather than divide the already decoded data, the user agent must re-decode the image without premultiplying, thus ensuring that the ImageBitmap is delivered with the highest quality data.</p><p>Image sources that do not have an alpha channel are not affected by this option.</p><p>Caution: Canvases are assumed to be premultiplied image sources, which may not always be accurate.</p>
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	==== Other potentially useful options ====		==== Other potentially useful options ====
			* enum imageOrientation, 'topLeft' and 'bottomLeft' <blockquote><p>'topLeft': identify visual orientation from image media meta data and re-order data so top-down, left-to-right processing for display results in correct visual orientation. If the image source is an ImageBitmap, the image data will be flipped vertically if and only if the source was created with bottomLeft orientation. If the image source holds no orientation information, the image orientation is not changed.</p><p>'bottomLeft': identify visual orientation from image media meta data and re-order data so bottom-up, left-to-right processing for display results in correct visual orientation. If the image source is an ImageBitmap, the image data will be flipped vertically if and only if the source was created with topLeft orientation. If the image source holds no orientation information, the image is flipped vertically.</p><blockquote>
	* DOMString? crossOrigin: The crossOrigin option is a [[https://html.spec.whatwg.org/multipage/infrastructure.html#cors-settings-attribute CORS settings attribute]]. It is consulted when [[ImageBitmap Constructor taking URL\|constructing an ImageBitmap from the URL of an image]]. Because ImageBitmaps can only be constructed from same-origin resources, in order to construct an ImageBitmap from the URL of a cross-origin image resource, the crossOrigin option must be specified, and the server must grant the request. Otherwise the Promise returned from createImageBitmap will be rejected.		* DOMString? crossOrigin: The crossOrigin option is a [[https://html.spec.whatwg.org/multipage/infrastructure.html#cors-settings-attribute CORS settings attribute]]. It is consulted when [[ImageBitmap Constructor taking URL\|constructing an ImageBitmap from the URL of an image]]. Because ImageBitmaps can only be constructed from same-origin resources, in order to construct an ImageBitmap from the URL of a cross-origin image resource, the crossOrigin option must be specified, and the server must grant the request. Otherwise the Promise returned from createImageBitmap will be rejected.
	* resizedWidth, resizedHeight: dimension to which the image should be resized. Could also be expressed using scale factors		* resizedWidth, resizedHeight: dimension to which the image should be resized. Could also be expressed using scale factors

Xidachen at 19:40, 5 February 2016

2016-02-05T19:40:26Z

← Older revision		Revision as of 19:40, 5 February 2016
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	=== Requests for this Feature ===		=== Requests for this Feature ===

	* <cite>[~~http~~://lists.~~whatwg~~.org/~~pipermail~~/whatwg-~~whatwg.org~~/~~2013-June~~/~~039793~~.html June 2013 whatwg thread]</cite>		* <cite>[https://lists.w3.org/Archives/Public/public-whatwg-archive/2013Jun/0114.html June 2013 whatwg thread]</cite>
	* <cite>[~~http~~://lists.~~whatwg~~.org/~~pipermail~~/whatwg-~~whatwg.org~~/~~2013-July~~/~~039983~~.html July 2013 whatwg thread]</cite>		* <cite>[https://lists.w3.org/Archives/Public/public-whatwg-archive/2013Jul/0075.html July 2013 whatwg thread]</cite>

	== Proposed Solutions ==		== Proposed Solutions ==

Xidachen at 15:47, 4 February 2016

2016-02-04T15:47:06Z

← Older revision		Revision as of 15:47, 4 February 2016
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	* enum colorspaceConversion, default = 'default' <blockquote><p>'none': The ImageBitmap must be created by decoding the source image media without performing any colorspace conversions. This means that the image decoding algorithm must ignore color profile meta-data embedded in the image source as well as the display device color profile. colorspaceConversion only applies when creating ImageBitmaps from bitmap media data (i.e. blobs and image elements with non-vector images)</p> <p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p></blockquote>		* enum colorspaceConversion, default = 'default' <blockquote><p>'none': The ImageBitmap must be created by decoding the source image media without performing any colorspace conversions. This means that the image decoding algorithm must ignore color profile meta-data embedded in the image source as well as the display device color profile. colorspaceConversion only applies when creating ImageBitmaps from bitmap media data (i.e. blobs and image elements with non-vector images)</p> <p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p></blockquote>
	* enum premultiplyAlpha, default = 'default' <blockquote><p>'none': Image sources that are premultiplied by alpha will have their color components divided by alpha and image sources that are not premultiplied will be left untouched.</p><p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p><p>When premultiplyAlpha is set to 'none', the division by alpha may result in loss of precision, which must be avoided whenever possible. For example, if the image source is a blob or an image element, the decoded image may already be available in premultipled form. Rather than divide the already decoded data, the user agent must re-decode the image without premultiplying, thus ensuring that the ImageBitmap is delivered with the highest quality data.</p><p>Image sources that do not have an alpha channel are not affected by this option.</p><p>Caution: Canvases are assumed to be premultiplied image sources, which may not always be accurate.</p>		* enum premultiplyAlpha, default = 'default' <blockquote><p>'none': Image sources that are premultiplied by alpha will have their color components divided by alpha and image sources that are not premultiplied will be left untouched.</p><p>'default': Implementation-specific behavior, possibly optimized for the implementation's graphics framework.</p><p>When premultiplyAlpha is set to 'none', the division by alpha may result in loss of precision, which must be avoided whenever possible. For example, if the image source is a blob or an image element, the decoded image may already be available in premultipled form. Rather than divide the already decoded data, the user agent must re-decode the image without premultiplying, thus ensuring that the ImageBitmap is delivered with the highest quality data.</p><p>Image sources that do not have an alpha channel are not affected by this option.</p><p>Caution: Canvases are assumed to be premultiplied image sources, which may not always be accurate.</p>
	~~</blockquote>~~
	* DOMString? crossOrigin, default = null <blockquote><p>The crossOrigin option is a [[https://html.spec.whatwg.org/multipage/infrastructure.html#cors-settings-attribute CORS settings attribute]]. It is consulted when [[ImageBitmap Constructor taking URL\|constructing an ImageBitmap from the URL of an image]]. Because ImageBitmaps can only be constructed from same-origin resources, in order to construct an ImageBitmap from the URL of a cross-origin image resource, the crossOrigin option must be specified, and the server must grant the request. Otherwise the Promise returned from createImageBitmap will be rejected.</p><p>Compared with the previous three options, this option has relatively lower priority.</p>
	</blockquote>		</blockquote>

	==== Other potentially useful options ====		==== Other potentially useful options ====
			* DOMString? crossOrigin: The crossOrigin option is a [[https://html.spec.whatwg.org/multipage/infrastructure.html#cors-settings-attribute CORS settings attribute]]. It is consulted when [[ImageBitmap Constructor taking URL\|constructing an ImageBitmap from the URL of an image]]. Because ImageBitmaps can only be constructed from same-origin resources, in order to construct an ImageBitmap from the URL of a cross-origin image resource, the crossOrigin option must be specified, and the server must grant the request. Otherwise the Promise returned from createImageBitmap will be rejected.
	* resizedWidth, resizedHeight: dimension to which the image should be resized. Could also be expressed using scale factors		* resizedWidth, resizedHeight: dimension to which the image should be resized. Could also be expressed using scale factors
	* resizeFilter: filtering method used for scaling the image (pixelated, low quality, high quality, etc.)		* resizeFilter: filtering method used for scaling the image (pixelated, low quality, high quality, etc.)