Image

The image object describes the image that is to be rendered.

• imageId - the imageId associated with this image object
• minPixelValue - the minimum stored pixel value in the image
• maxPixelValue - the maximum stored pixel value in the image
• slope - the rescale slope to convert stored pixel values to modality pixel values or 1 if not specified
• intercept - the rescale intercept used to convert stored pixel values to modality values or 0 if not specified
• windowCenter - the default windowCenter to apply to the image
• windowWidth - the default windowWidth to apply to the image
• getPixelData - a function that returns the underlying pixel data. An array of integers for grayscale and an array of RGBA for color
• getImageData - a function that returns a canvas imageData object for the image. This is only needed for color images
• getCanvas - a function that returns a canvas element with the image loaded into it. This is only needed for color images.
• getImage - a function that returns a JavaScript Image object with the image data. This is optional and typically used for images encoded in standard web JPEG and PNG formats
• rows - number of rows in the image. This is the same value as height but replicated for convenience
• columns - number of columns in the image. This is the same as width but replicated for convenience
• height - the height of the image. This is the same value as rows but replicated for convenience
• width - the width of the image. This is the same value as columns but replicated for convenience
• color - true if pixel data is RGB, false if grayscale
• columnPixelSpacing - horizontal distance between the middle of each pixel (or width of each pixel) in mm or undefined if not known
• rowPixelSpacing - vertical distance between the middle of each pixel (or heigh of each pixel) in mm or undefined if not known
• invert - true if the the image should initially be displayed be inverted, false if not. This is here mainly to support DICOM images with a photometric interpretation of MONOCHROME1
• sizeInBytes - the number of bytes used to store the pixels for this image.