 |
BUILT-IN MATHEMATICA SYMBOL
ReplacePixelValue
ReplacePixelValue[image, {xp, yp}->val]
changes the pixel values at pixel position 
in image to val.
ReplacePixelValue[image, {xpmin;;xpmax, ypmin;;ypmax}->val]
changes the pixel values at the pixel positions that range from 
to 
to val.
ReplacePixelValue[image, {xp, yp}->val, "type"]
assumes val to be of the specified type.
Details
- In ReplacePixelValue[image, {xp, yp}->val], the pixel position
with 
assumed to be in the standard image coordinate system, where the values of x range from 
to width and y from 
to height. - Integer pixel positions correspond to the centers of pixels with
representing the center of the pixel at the bottom-left corner. - In 3D, pixel position
corresponds to the center of the bottom-left front pixel. - In ReplacePixelValue[image, {x, y}->val], val can be a scalar, a list of channel values, or a color.
- ReplacePixelValue[image, {{x1, y1}->val1, ...}] can be used to set pixel values for multiple positions.
- ReplacePixelValue[image, {{x1, y1}, ...}->val] sets the pixel values for all specified positions to val.
- When the coordinate
lies on a boundary between pixels, all adjacent pixels are modified. - ReplacePixelValue[image, {x, y}->val] typically returns an image of the same type as the input image.
New in 9
