Avision @V2800 - Manual (Page 109)

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Determining a Proper Resolution
A proper resolution reproduces a clear image with good details. The resolution is
measured by dots per inch (dpi).
Adjusting the Brightness and Contrast
1. Brightness
Adjusts the lightness or darkness of an image. The higher the value, the brighter
the image.
2. Contrast
Adjusts the range between the darkest and the lightest shades in the image. The
higher the contrast, the bigger the different grayscale.
Enlarging Previewed Image
Enlarge your previewed image to the max. of the preview window.
Note this function only enlarging your preview image. This does not
enlarge your real image.
Inverting and Selecting Your Image
The invert command reverses the brightness and the color in the image. For
color images, each pixel will be changed into its complementary color at the
command of Invert.
Mirror Function
Reverse the right and left side of your image.
Auto Select Image
Automatically set the whole image as your scan area. (Or you may resize the
area by “drag and drop” diagonally.)