Manual

Table Of Contents
DobotVisionStudio User Guide
Issue V4.1.2 (2022-06-08) User Guide Copyright © Yuejiang Technology Co., Ltd.
130
Standard Deviation: The standard deviation is the arithmetic square root of the variance.
The standard deviation can reflect the dispersion of a data set.
Contrast: Contrast is a relative value. For a picture, it reflects the ratio of the brightest part
to the darkest part of the picture.
Pixel Count
Count the number of pixels that meet the high and low threshold grayscale setting in the ROI area,
as shown below.
Parameters and Results:
Low Threshold: the grayscale value in the area that needs count should be larger than low
threshold value.
High Threshold: the grayscale value in the area that needs count should be smaller than
high threshold value.
Rate: pixel point rate in this area.
NOTICE
If low threshold is larger than high threshold, the value of pixel should be between
[0, high threshold] and [low threshold, 255]. If low threshold is smaller than high
threshold, the value of pixel should be between [low threshold, high threshold].
Edge Distance
This tool is used to detect the distance between two feature edges. First, find the edge that meets the
conditions, and then measure the distance, as shown in the following figure. As some parameters
have been explained in previous sections, this section mainly describes part of the parameters.