C001537_15_CR2_User_Manual 53
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5.2 - Windowing
If only one size of bar code is being scanned in an application, the CR2 can be optimized to reduce processing time by
adjusting the viewing area within the fi eld of view of the image.
By reducing the vertical window value of the imager to 200 pixels, 1D codes are processed more quickly. Because only a
horizontal strip of a 1D code is needed to be decoded, using a narrow strip of the imager is all that is needed. The area
above and below the 200 pixels, which is always in the center of the imager, is ignored. This approach reduces the num-
ber of pixels that must be processed.
Windowing can also improve the processing time of 2D codes.
You may negatively impact reader performance if the window size is too small. If it is necessary to have the reader farther
away than normal to read the code, the window may be too small.
Reading other types of codes, especially large codes, may be diffi cult while using this setting.
Medium Code Windowing
Small Code Windowing
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