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Image Processing Functions
Modules§
- Functions for altering and converting the color of pixelbufs
Structs§
- A bi-level color map
Enums§
- Available Sampling Filters.
Traits§
- A color map
Functions§
- Performs a Gaussian blur on the supplied image.
sigma
is a measure of how much to blur by. - Brighten the supplied image.
value
is the amount to brighten each pixel by. Negative values decrease the brightness and positive values increase it. - Adjust the contrast of the supplied image.
contrast
is the amount to adjust the contrast by. Negative values decrease the contrast and positive values increase the contrast. - Return a mutable view into an image The coordinates set the position of the top left corner of the crop.
- Return an immutable view into an image The coordinates set the position of the top left corner of the crop.
- Reduces the colors of the image using the supplied
color_map
while applying Floyd-Steinberg dithering to improve the visual conception - Perform a 3x3 box filter on the supplied image.
kernel
is an array of the filter weights of length 9. - Flip an image horizontally
- Flip an image horizontally and put the result into the destination
ImageBuffer
. - Flip an image horizontally in place.
- Flip an image vertically
- Flip an image vertically and put the result into the destination
ImageBuffer
. - Flip an image vertically in place.
- Convert the supplied image to grayscale. Alpha channel is discarded.
- Convert the supplied image to grayscale. Alpha channel is preserved.
- Convert the supplied image to a grayscale image with the specified pixel type. Alpha channel is discarded.
- Convert the supplied image to a grayscale image with the specified pixel type. Alpha channel is preserved.
- Fill the image with a linear horizontal gradient
- Hue rotate the supplied image.
value
is the degrees to rotate each pixel by. 0 and 360 do nothing, the rest rotates by the given degree value. just like the css webkit filter hue-rotate(180) - Reduces the colors using the supplied
color_map
and returns an image of the indices - Linearly sample from an image using coordinates in [0, w-1] and [0, h-1].
- Sample from an image using coordinates in [0, w-1] and [0, h-1], taking the nearest pixel.
- Invert each pixel within the supplied image. This function operates in place.
- Overlay an image at a given coordinate (x, y)
- Calculate the region that can be copied from top to bottom.
- Replace the contents of an image at a given coordinate (x, y)
- Resize the supplied image to the specified dimensions.
nwidth
andnheight
are the new dimensions.filter
is the sampling filter to use. - Rotate an image 90 degrees clockwise.
- Rotate an image 90 degrees clockwise and put the result into the destination
ImageBuffer
. - Rotate an image 180 degrees clockwise.
- Rotate an image 270 degrees clockwise.
- Rotate an image 180 degrees clockwise and put the result into the destination
ImageBuffer
. - Rotate an image 180 degrees clockwise in place.
- Rotate an image 270 degrees clockwise and put the result into the destination
ImageBuffer
. - Linearly sample from an image using coordinates in [0, 1].
- Sample from an image using coordinates in [0, 1], taking the nearest coordinate.
- Resize the supplied image to the specific dimensions.
- Tile an image by repeating it multiple times
- Performs an unsharpen mask on the supplied image.
sigma
is the amount to blur the image by.threshold
is the threshold for minimal brightness change that will be sharpened. - Fill the image with a linear vertical gradient