Distorted image calibration

This dialogue box is used to determine coordinate limits for calibrating a distorted image. When a camera is selected with the lower left radio buttons, and the calibration function is ready, the physical coordinates of four corners of the field of view are shown on the left of the dialogue box. Physical coordinate limits for the calibrated image can be manually input into the four edit boxes on the right according to the information provided on the left.

Three short-cut buttons are used for automatically determining the coordinate limits. i. e.

Fit image button - including the full field of view in the calibrated image with maximal digital resolution.

Fit center button - including the full field of view in the calibrated image and putting the field of view center at the image center.

Fit A&B button used to determine the overlapped field of view of camera A and B, when the two calibration functions are ready.

Edpiv pE 2013 help

Several choices are available for the calibrated image frame as below.

same - the calibrated image has the same frame as the original image.

fit size - the calibrated image has a frame of the same pixels as that of the original image.

fit width - the calibrated image has a frame of the same width as that of the original image.

given width - the calibrated image has a frame of given width.