On this page of the Checkpoint wizard, you specify the comparison parameters that will be used to verify the specified image.
Pixel Tolerance
This parameter specifies the number of allowed different pixels. The default value is 0. It means that the comparison procedure will ignore slight differences between the images during the comparison. If the number of different pixels is less than or equal to the Pixel Tolerance value, TestComplete considers the images identical.
You can specify the value of the Pixel Tolerance parameter either by typing the desired value in the edit box or by dragging the slider on the right of the edit box.
Color Tolerance
If you specify a non-zero value in this edit box, the color dissimilarity between images will be ignored. The allowed difference is specified as an integer value within the range 0…255 that represents an acceptable difference for each color component (red, green, and blue) of the compared pixels. Two pixels are considered identical if the difference between intensities of each of their color components does not exceed the specified value. When ColorTolerance is 0, the compared pixels are considered identical only if they have exactly the same color. When ColorTolerance is 255, pixels of any color are considered identical.
You can specify the value of the Color Tolerance parameter either by typing the desired value in the edit box or by dragging the slider on the right of the edit box.
Click Finish to exit the wizard and add the region checkpoint to your test.