Greyscale and Color PatMax RedLine™ Functions

Edge Finding

The TrainPatMaxRedLine and FindPatMaxRedLine functions operate on greyscale images only. When these functions perform the pattern extraction, the image is converted to a greyscale image. This process may result in losing some edge features because many combinations of RBG values can convert to the same greyscale level. On the other hand, the TrainPatMaxRedLineColor and FindPatMaxRedLineColor functions directly process color images without any conversion, and find the edge features better in many cases.

Original Image (Blue Background with Red Text)


TrainPatMaxRedLine	TrainPatMaxRedLineColor

The above images show an extreme example where the edge features become completely undetectable after converting the color image to greyscale (the grey box is what PatMax RedLine sees when training). In this case, the TrainPatMaxRedLine function fails to train because no edges can be detected in the greyscale image. On the other hand, the TrainPatMaxRedLineColor function finds the edge features without any issues and trains the feature successfully.

Note: The PatMax RedLine Color functions will not operate on a greyscale input image; the tool will return #ERR in this case. The TrainPatMaxRedLine and FindPatMaxRedLine functions should continue to be used to solve greyscale applications.

Color Matching

In addition to the PatMax RedLine functions' existing functionality (e.g. tolerances including rotation, scale, and XY overlap), the PatMax RedLine Color functions use colors to find the best match.

PatMax RedLine Color	PatMax RedLine

Find Blue Parts on Grey Background	Find Patterns on Greyscale Image

Find Blue Parts on Any Background

Find All Matching Shapes of Any Color, on Any Background