Honeywell 1900gsr 2 User Manual

							Xenon/Granit User Guide 251
K - Gamma Correction
Gamma measures the brightness of midtone values produced by the image. You 
can brighten or darken an image using gamma correction. A higher gamma correc-
tion yields an overall brighter image. The lower the setting, the darker the image. 
The optimal setting for text images is 50K. 
0K Gamma correction off (default)
50K Apply gamma correction for brightening typical document image
nK Apply gamma correction factor n (n = 0-1,000)
Example:
L, R, T, B, M - Image Cropping
Ships a window of the image by specifying the left, right, top, and bottom pixel 
coordinates. Device columns are numbered 0 through 1279, and device rows are 
numbered 0 through 959.
nL The left edge of the shipped image corresponds to column n of the image 
in memory. Range: 000 - 843. (Default = 0)
nR The right edge of the shipped image corresponds to column n - 1 of the 
image in memory. Range: 000 - 843. (Default = all columns)
nT The top edge of the shipped image corresponds to row n of the image in 
memory. Range: 000 - 639. (Default = 0)
Gamma Correction set 
to 50K:  Gamma Correction set 
to 0K:Gamma Correction set 
to 255K: 
						

							252 Xenon/Granit User GuidenB The bottom edge of the shipped image corresponds to row n - 1 of the 
image in memory. Range: 000 - 639. (Default = all rows)
Example:
Alternately, specify the number of pixels to cut from the outside margin of the 
image; thus only the center pixels are transmitted.
nM Margin: cut n columns from the left, n + 1 columns from the right, n rows 
from the top, and n + 1 rows from the bottom of the image. Ship the 
remaining center pixels. Range: 0 - 238. 
(Default = 0, or full image)
Example:
P - Protocol
Used for shipping an image. Protocol covers two features of the image data being 
sent to the host. It addresses the protocol used to send the data (Hmodem, which is 
an Xmodem 1K variant that has additional header information), and the format of 
the image data that is sent.
0P None (raw data) 
2P None (default for USB)
3P Hmodem compressed (default for RS232)
4P Hmodem
S - Pixel Ship
Pixel Ship sizes an image in proportion to its original size. It decimates the image 
by shipping only certain, regularly spaced pixels. 
Example:4S would transmit every fourth pixel from every fourth line. 
Image Crop set to 
300L: Image Crop set to 
300R: Uncropped Image:
Image Crop set to 200T: Image Crop set to 200B:
Image Crop set to 238M: 
						

							Xenon/Granit User Guide 253The smaller number of pixels shipped, the smaller the image, however, after a cer-
tain point the image becomes unusable. 
1S ship every pixel (default)
2S ship every 2nd pixel, both horizontally and vertically
3S ship every 3rd pixel, both horizontally and vertically
Example:
U - Document Image Filter
Allows you to input parameters to sharpen the edges and smooth the area between 
the edges of text in an image. This filter should be used with gamma correction 
(see page 251), with the scanner in a stand, and the image captured using the 
command:
IMGSNP1P0L168W90%32D
This filter typically provides better JPEG compression than the standard E - Edge 
Sharpen command (see page 254). This filter also works well when 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
nU Apply document image filter using grayscale threshold n. Use lower 
numbers when the image contrast is lower.  1 U  w i l l  h a v e  a  s i m i l a r  e f f e c t  t o  
setting E - Edge Sharpen (page 247) to 22e. Range: 0-255.
Example:
  Pixel Ship set to 1S: Pixel Ship 
set to 2S: Pixel Ship 
set to 4S:  Pixel Ship 
set to 3S:
 Document Image Filter set to 0U:  Document Image Filter set to 26U: 
						

							254 Xenon/Granit User Guide
V - Blur Image
Smooths transitions by averaging the pixels next to the hard edges of defined lines 
and shaded areas in an image. 
0V Don’t blur (default)
1V Blur
Example:
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
Example:
Image Size Compatibility
If you have applications that expect an image ship to return exactly 640x480 pix-
els, scan the Force VGA Resolution bar code. Default = Native Resolution.
 Blur Image Off (0V):  Blur Image On (1V):
Image used for histogram: Histogram  of  image:
Force VGA Resolution 
						

							Xenon/Granit User Guide 255
Intelligent Signature Capture - IMGBOX
IMGBOX allows you to configure the size and location of a signature capture area 
relative to its proximity to a bar code. This allows you to tailor a signature capture 
area to a specific form. In order to use IMGBOX, you need a set form where the sig-
nature box location is in a known location relative to a bar code. You can input the 
overall size of the signature area, as well as specify how far the signature area is 
from the bar code, vertically and horizontally. You can also set the resolution and 
file format for the final output of the signature capture image.
Note:IMGBOX commands can only be triggered by one of the following types of bar codes: 
PDF417, Code 39, Code 128, Aztec, Codabar, and Interleaved 2 of 5. Once one of 
these symbologies has been read, the image is retained for a possible IMGBOX 
command.
Signature Capture Optimize
If you will be using your scanner to capture signatures frequently, you should opti-
mize it for this purpose. However, the speed of scanning bar codes may be slowed 
when this mode is enabled. Default = Off.
Below is an example of a signature capture application. In this example, the aimer 
is centered over the signature capture area and the trigger is pressed. A single beep 
is emitted, indicating that the scanner has read a Code 128 bar code and the data 
has been transferred to the host. If using a Granit scanner, the scanner also 
vibrates. An IMGBOX command may now be sent from the host to specify the coor-
dinates of the signature capture area below that code, and indicating that only that 
area containing the signature should be transferred as an image to the host.
* Native Resolution
Optimize On
* Optimize  Off 
						

							256 Xenon/Granit User GuideTo see this example, align the aimer with the signature area (not with the bar code), 
then press the trigger. 
Send the following IMGBOX command string after the trigger press:
Example:IMGBOX245w37h55y.
Note:Case is not important in the command string. It is used here only for clarity.
The following image is captured:
The IMGBOX commands have many different modifiers that can be used to change 
the size and appearance of the signature image output by the scanner. Modifiers 
affect the image that is transmitted, but do not affect the image in memory. Any 
number of modifiers may be appended to the IMGBOX command.
Note:The IMGBOX command will return a NAK unless a window size (width and height) are 
specified. See H - Height of Signature Capture Area (page 258) and W - Width of 
Signature Capture Area (page 259).
IMGBOX Modifiers
A - Output Image Width
This option is used to size the image horizontally. If using this option, set the reso-
lution (R) to zero.
Example:
Image Width set to 200A:
Image Width set to 600A: 
						

							Xenon/Granit User Guide 257
B - Output Image Height   
This option is used to size the image vertically. If using this option, set the resolu-
tion (R) to zero.
Example:
D - Pixel Depth
This indicates the number of bits per pixel in the transmitted image, which defines 
whether it will be grayscale or black and white. 
8D 8 bits per pixel, grayscale image  (default)
1D 1 bit per pixel, black and white image
F - File Format
This option indicates the type of file format in which to save the image. 
0F KIM format
1F TIFF binary
2F TIFF binary group 4, compressed
3F TIFF grayscale
4F Uncompressed Binary
5F Uncompressed grayscale
6F JPEG image (default)
7F Outlined image
8F BMP format
Image Height set to 50B:
Image Height set to 100B: 
						

							258 Xenon/Granit User Guide
H - Height of Signature Capture Area
The height of the signature capture area must be measured in inches divided by 
.01. In the example, the height of the area to be captured is 3/8 inch, resulting in a 
value of H = .375/0.01 = 37.5. 
K - Gamma Correction
Gamma measures the brightness of midtone values produced by the image. You 
can brighten or darken an image using gamma correction. A higher gamma correc-
tion yields an overall brighter image. The lower the setting, the darker the image. 
The optimal setting for text images is 50K. 
0K Gamma correction off (default) 
50K Apply gamma correction for brightening typical document image
nK Apply gamma correction factor n (n = 1-255)
Example:
R - Resolution of Signature Capture Area
The resolution is the number of pixels that the scanner outputs per each minimum 
bar width. The higher the value for R, the higher the quality of the image, but also 
the larger the file size. Values begin at 1000. The scanner automatically inserts a 
Example: IMGBOX245w37h55y.
Gamma Correction set to 50K: Gamma Correction set to 0K:
Gamma Correction set to 255K: 
						

							Xenon/Granit User Guide 259decimal point between the first and second digit. For example, use 2500 to specify 
a resolution of 2.5. Set to zero when using the A and B modifiers (see A - Output 
Image Width and B - Output Image Height on page 257).
Example:
S - Bar Code Aspect Ratio
All dimensions used in IMGBOX are measured as multiples of the minimum ele-
ment size of the bar code. The bar code aspect ratio allows you to set the ratio of 
the bar code height to the narrow element width. In the example, the narrow ele-
ment width is .010 inches and the bar code height is 0.400 inches, resulting in a 
value of S = 0.4/0.01 = 40.
W - Width of Signature Capture Area
The width of the signature capture area must be measured in inches divided by .01. 
In the example, the width of the area to be captured is 2.4 inches, resulting in a 
value of W = 2.4/0.01 = 240. (A value of 245 was used in the example to accommo-
date a slightly wider image area.)
X - Horizontal Bar Code Offset
The horizontal bar code offset allows you to offset the horizontal center of the sig-
nature capture area. Positive values move the horizontal center to the right and 
negative values to the left. Measurements are in multiples of the minimum bar 
width. 
Example:
Resolution set to 1000R: Resolution set to 0R:
Resolution set to 2000R:
Example: IMGBOX245w37h55y.
Horizontal Offset set to -75X:Horizontal Offset set to 75X: 
						

							260 Xenon/Granit User Guide
Y - Vertical Bar Code Offset
The vertical bar code offset allows you to offset the vertical center of the signature 
capture area. Negative numbers indicate that the signature capture is above the 
bar code, and positive numbers indicate that the area is below the bar code. Mea-
surements are in multiples of the minimum bar width
Example:. 
RF Default Imaging Device
The scanner supports imaging command processing (IMGSHP, IMGSNP, IMGBOX) 
so that EZConfig-Scanning (see page 263) and other applications are able to per-
form imaging functions as if they were communicating directly with a scanner. To 
accomplish this, the scanner uses a menu command called RF_DID (RF Default 
Imaging Device). RF_DID is the name of the scanner (BT_NAM) that is to receive 
imaging commands. The default for RF_DID is “*”indicating that imaging com-
mands are to be sent to all associated scanners. Change this setting to RF_DID-
scanner_name to ensure that they are sent to a particular scanner. Refer to 
"Page"on page 3-52 to generate a report containing the port, work group, scanner 
name, and address for each scanner. Refer to "Scanner Name"on page 3-66 set a 
unique name for each scanner.
Vertical Offset set to -7Y:
Vertical Offset set to 65Y: