Manual

Table Of Contents
DobotVisionStudio User Guide
Issue V4.1.2 (2022-06-08) User Guide Copyright © Yuejiang Technology Co., Ltd.
168
Parameters:
Correction Point Input: it includes By Point and By Coordinates.
Correction Center Point: It refers to center point coordinate of perspective distortion
correction. When Input by Point is selected, you can link the data of the previous module. When
"by coordinate" is selected, the X and Y coordinates of the correction center need to be customized.
Distortion Type: it has three types, including perspective distortion, radial distortion and
radial perspective distortion.
Calibration Board Type: select checkerboard calibration board, or circle calibration board.
Dot Circularity: it is the threshold of circle detection. The larger the value, the much
rounder circle will be detected.
Edge Low Threshold: it is used to extract the low threshold of the edge.
Edge High Threshold: it is used to extract the high threshold of the edge. Only the edge
point whose edge gradient threshold is between edge low threshold and edge high threshold can be
detected.
Round Dot Type: black circle on white and white circle on black can be selected
Grayscale Contrast: it refers to the min. value of contrast between adjacent black-and-
white squares in a checkerboard image, it is recommended to use default value.
Median Filter Status: Whether to perform median filtering before corner point extraction.
There are two modes: "Perform Filtering" and "No Filtering". It is recommended to use the default
value.
Subpixel Window: this parameter indicates whether to adaptively calculate the window
size of corner sub-pixel accuracy. When each checkerboard grid accounts for more pixels, this value
can be increased appropriately. It is recommended to use the default value.
Set Window Size: adjust window size manually.
Weighting Function: you can select least squares, Huber, and Tukey algorithm functions.
It is recommended to use default parameter.