Hardware manual

Color Blob Impact Reference Guide
Datalogic Automation Inc. 3-98
To set up the tool using a Train Shape List:
1. Select the desired Blob Detect Type.
2. Draw the Train Shape List ROI over the desired solid color area.
3. Click the Train button. The tool finds R, G and B values of the average color in the Train Shape List
ROI and put it in the Trained Color value.
If you are looking for out of range blobs in a solid color area, you can set up the tool without a Train Shape
List.
To set up the tool without a Train Shape List:
1. Select the desired Blob Detect Type.
2. Draw the Shape List ROI over the desired solid color area.
3. Click the Train button. The tool determines that there is no Train Shape List and uses the Shape List
ROI to calculate the Trained Color value.
You need to adjust the sensitivity of the Maximum Allowed Color Difference. The units are greyscale steps
from 0 to 100, just like the monochrome Blob tool threshold range, so values of 5 to 10 are typical.
Note: This tool does not use L*a*b colors like the Color Checker does because it is unreasonably slow to
calculate L*a*b color differences for every pixel.
Input Name What it is
Input Image Linked Image
Click the plus sign to access greyscale versions of the image that you
can link into other greyscale image processing tools. These images are
similar to the image you get if you use a color filter or color light with a
greyscale camera. See “Color Image Sub-Properties” on page 3-35.
Tool Origin The tool’s origin relative to the entire image space.
Shape List The desired region of the image to check.
Train Shape List The region of the image that contains the desired color.
Shape List ROI
Type
Each Shape is separate ROI: Each shape is processed as a separate
ROI and the results are combined. This mode is faster than the other
mode if the shapes are far apart, but results are duplicated if the shapes
overlap.
ShapeList is One ROI: The ShapeList is one large rectangular ROI and
the shapes are the enabled pixels within the rectangle. The tool may be
slow if the shapes are far apart. This setting allows shapes to overlap
and form complex shapes without repeating the overlapped pixels and
duplicating results.
Blob Detect Type Detect Out of Range: detects blobs that are outside the Maximum
Allowed Color Difference
Detect In Range: detects blobs that are within the Maximum Allowed
Color Difference
Trained Color The Red, Green, and Blue values of the trained color.
Trained Color List When Train Mode is set to Add To The Trained Color this contains a list
of all the trained colors. Pixels are in range if they are in range for any
color in the list.