Crop To Pixel Addresses - Motorola PL3307 Integration Manual

5 - 16 PL3307 Decoder Integration Guide

Crop to Pixel Addresses

Parameter # F4h F0h 3Bh (Top)
Parameter # F4h F0h 3Ch (Left)
Parameter # F4h F0h 3Dh (Bottom)
Parameter # F4h F0h 3Eh (Right)
If Enable Image Cropping is selected, set the pixel addresses from (0,0) to (751,479) to crop to.
Columns are numbered from 0 to 751, rows from 0 to 479. Specify four values for Top, Left, Bottom, and Right,
where Top and Bottom correspond to row pixel addresses, and Left and Right correspond to column pixel
addresses. For example, for a 4 row x 8 column image in the extreme bottom-right section of the image, set the
following values:
Top = 476, Bottom = 479, Left = 744, Right = 751
To set the pixel address to crop to, scan each Pixel Address bar code followed by three bar codes from
Appendix D, Numeric Bar Codes
example, scan 0 , 0 , 3 .
NOTE The decoder has a minimum cropping resolution of four pixels; increment and decrement cropping
addresses in multiples of four. Other values are rounded up. For example, choosing to crop from the top at
addresses 0, 1, or 2 (removing 1, 2, or 3 pixels) has the same result as cropping at address 3; this
removes four rows from the top.
Top Pixel Address
(0 - 479 Decimal)
Bottom Pixel Address
(0 - 479 Decimal)
which represent the value. Include leading zeros, so to enter a value of 3, for
Left Pixel Address
(0 - 751 Decimal)
Right Pixel Address
(0 - 751 Decimal)