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1. Realize the adjustment for the “Brightness”, “Contrast” and “Saturation” of the image
file.
2.Realize the operation of “Trim”, “Straighten”, “CUT”
，
“Y axis mirror”, and “X axis
mirror” for the image file
3. Realize the five effects for the image file, such as “Gray”, “Threshold”, “Invert”,
“Emboss” and “Sharpness”
