Image Size Compatibility - Hand Held Products 4820 User Manual

U - Document Image Filter: Sharpens the edges and smooths the area
between the edges of the transmitted text image. The Document Image Filter
enhances images of documents such as ID cards and prescriptions. This filter
should be used with gamma correction (see
stand, and the image captured using the command:
This filter typically provides better JPEG compression than the standard E -
Edge Sharpen command (see
shipping pure black and white images (1 bit per pixel). The optimal setting is
26U.
0U Document image filter off (default)
26U Apply document image filter for typical document image
n U
Apply document image filter using grayscale threshold n. Use
lower numbers when the image contrast is lower. 1U will have a
similar effect to 22e. Range: 0-255.
V - Blur Image: Smooths transitions by averaging the pixels next to the hard
edges of defined lines and shaded areas in an image.
Don't blur (default)
0V
1V Blur
W - Histogram Ship: A histogram gives a quick picture of the tonal range of
an image, or key type. A low-key image has detail concentrated in the
shadows; a high-key image has detail concentrated in the highlights; and an
average-key image has detail concentrated in the midtones. This modifier
ships the histogram for an image.
0W Don't ship histogram (default)
1W Ship histogram

Image Size Compatibility

If you prefer that an image ship returns images at the sensor's native resolution
(752x480 pixels for the 5X00 engine, 640x480 pixels for the 4X00 engine), scan
the Native Resolution code. If you have an imager with a 4X00 image engine
and have designed applications that expect an image ship to return exactly
640x480 pixels, scan the Force VGA Resolution bar code. Refer to
Engine Revision"
unit. Default = Force VGA Resolution
* Force VGA Resolution
8 - 6
IMGSNP1P0L168W90%32D
page
on page 11-1 for information on determining the engine in your
page 8-4), with the imager in a
8-3). This filter also works well when
2020/4820/4820i User's Guide
"Show
Native Resolution