Use
Image Processing tools to adjust the appearance of an image.
These tools filter the image, resulting in permanent changes to the image pixels.
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Histogram. Adjust the tone of an image in many ways, including conversion of color images to grayscale and color or grayscale images to bitonal.
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Convolve. Use smoothing filters and sharpening filters to improve the appearance of your image. Smoothing filters reduce harshness and noise in your image. Sharpening filters make differences in shading more distinct.
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Bitonal Filters. Smooth the appearance of raster lines or separate partially merged raster lines.
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Change Density. Increase or decrease the resolution of an image.
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Change Color Depth. Increase or decrease the color depth of an image. For instance, you can change an 8-bit grayscale image to a bitonal image.
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Palette Manager. Change colors or shades of gray in an 8-bit image, import and export palettes.