===== Image Endpoints =====

The following endpoints are available in PMA.core to view Whole Slide Images and its associated labels, thumbnails and macro images. The following list contains the endpoint URL, a brief description and the available parameters for each one.

==== Tile ====
**/tile** Renders a square tile of a slide
^Parameter ^Description^
|**sessionID**|The session id to authenticate with|
|**pathOrUid**|The path or unique identifier of the image to render or a valid collection config JSON|
|**timeframe**|The index of the time frame to render|
|**layer**|The index of the layer to render|
|**channels**|Comma separated channel indexes to render|
|**channelClipping**|Min and max limits to clip and scale pixel values. Two values required per channel|
|**gamma**|Gamma values for each channel. One value required per channel|
|**x**|The x index of the tile|
|**y**|The y index of the tile|
|**z**|The z index of the tile|
|cache|//Optional// parameter that tells the renderer whether or not to use the cache to fetch the tile|
|format|//Optional// resulting image format. Valid values are JPG, JPEG and PNG|
|quality|//Optional// quality parameter used only for the jpeg format|
|postGamma|//Optional// gamma value to apply as post processing|
|brightness|//Optional// brightness value to apply as post processing|
|contrast|//Optional// contrast value to apply as post processing|
**Returns** A file stream that contains the rendered region

**Example** ///tile?sessionId=%%sessionId%%&pathOrUid=%%path%%&timeframe=0&layer=0&channels=0&channelClipping=0,0&gamma=1&x=0&y=0&z=0//

==== Region ====
**/region** Renders a region of a slide
^Parameter ^Description^
|**sessionID**|The session id to authenticate with|
|**pathOrUid**|The path or unique identifier of the image to render|
|**timeframe**|The index of the time frame to render|
|**layer**|The index of the layer to render|
|**channels**|Comma separated channel indexes to render|
|**x**|The x coordinate of the image to render|
|**y**|The y coordinate of the image to render|
|**width**|The width of the region to render|
|**height**|The height of the region to render|
|**scale**|The factor to scale the rendered region by|
|**channelClipping**|Min and max limits to clip and scale pixel values. Two values required per channel.|
|**gamma**|Gamma values for each channel. One value required per channel |
|drawScaleBar|//Optional// Draw an accurate scale bar|
|downloadInsteadOfDisplay|//Optional// Whether or not to download the image or display it in the browser|
|drawFilename|//Optional// 0 do not draw, 1 draw filename on top, 2 draw on bottom|
|format|//Optional// parameter representing the resulting image format. Valid values are JPG, JPEG and PNG|
|quality|//Optional// quality parameter used only for the jpeg format|
|annotationsLayerType|//Optional// A comma separated list of extra annotations layer to render|
|rotation|//Optional// Rotation angle in degrees|
|flipHorizontal|//Optional// Whether to flip region horizontally|
|flipVertical|//Optional// Whether to flip the region vertically|
|dpi|//Optional// dpi to resolution for the exported image|
|postGamma|//Optional// gamma value to apply as post processing|
|brightness|//Optional// brightness value to apply as post processing|
|contrast|//Optional// contrast value to apply as post processing|
**Returns** A file stream that contains the rendered region

**Example** ///region?sessionId=%%sessionId%%&pathOrUid=%%path%%&timeframe=0&layer=0&channels=0&channelClipping=0,0&gamma=1&x=0&y=0&width=1000&height=1000//

==== Thumbnail ====
**/thumbnail** Renders the associated thumbnail of slide
^Parameter ^Description^
|**sessionID**|The session id to authenticate with|
|**pathOrUid**|The path or unique identifier of the image to render|
|orientation|//Optional// The orientation of the thumbnail (0 = auto; 1 = vertical; 2 = horizontal)|
|w|//Optional// Expected output width of the thumbnail|
|h|//Optional// Expected output height of the thumbnail|
**Returns** An image


**Example** ///thumbnail?sessionId=%%sessionId%%&pathOrUid=%%path%%//

==== Macro ====
**/macro** Renders the associated macro of a slide

^Parameter ^Description^
|**sessionID**|The session id to authenticate with|
|**pathOrUid**|The path or unique identifier of the image to render|
|orientation|//Optional// The orientation of the macro (0 = auto; 1 = vertical; 2 = horizontal)|
|w|//Optional// Expected output width of the macro|
|h|//Optional// Expected output height of the macro|
**Returns** An image

**Example** ///macro?sessionId=%%sessionId%%&pathOrUid=%%path%%//

==== Barcode ====
**/barcode** Renders the associated [[barcode|barcode]] of a slide
^Parameter ^Description^
|**sessionID**|The session id to authenticate with|
|**pathOrUid**|The path or unique identifier of the image to render|
|orientation|//Optional// The orientation of the barcode (0 = auto; 1 = vertical; 2 = horizontal)|
|w|//Optional// Expected output width of the barcode|
|h|//Optional// Expected output height of the barcode|
**Returns** An image

**Example** ///barcode?sessionId=%%sessionId%%&pathOrUid=%%path%%//