Located in april.camera, this suite computes accurate camera calibrations and results are more repeatable than popular alternatives like OpenCV (as determined by human trials). You can scale these if you want a bit of a margin for rigging/mounting. You can print these at Fedex/Kinko’s, laminate them etc. Is there a way for me to reduce or correct the lens and camera distortion that I am seeing in my images Due to my camera setup, my images are all taken at an angle and all images are deformed in the same manner. This paper proposes a control point detection method using concentric circle grids as the calibration pattern. The APRIL camera calibration suite is now available in the master branch of the APRIL Robotics Toolkit. Lens Distortion Grids (pdf) for download. All my images have the same distortion in them due to the lens or camera that I am using.
Using the proposed method, the lens distor-tion parameters are obtained by minimizing a 4 total-degree polynomial in several variables. In this paper, we propose an algebraic approach to the estimation of the lens distortion parameters based on the rectification of lines in the image. Features include control the amount of distortion correction introduced in both the horizontal and vertical axes respectively, lock the vertical slider to the horizontal for proportional distortion correction, with pincushion distortion pixels that are grabbed from outside the image boundaries are colored using the selected color, define the type of camera lens has been used and presets the appropriate distortion correction, allow user input while all other settings lock sliders to preset values, specify the out-of-range color, image can be scaled to compensate for distortion corrected size differences, and apply all effects (in realtime) on 'mouse drag' instead of on 'mouse release'. We observe that grid patterns consider the impact of lens distortion, while circular features have the advantage of detecting projected centers. Lens dis-tortion models try to correct such distortion. By applying distortion correcting algorithms to the image, the amount of distortion can be minimized and sometimes corrected. Powered by Silhouette’s Roto tools, Lens Correction locates and undistorts lens distortion. Lens Distortion Corrector is a filter produces texture map correction for spherical texture mapping. When digitizing images from any camera source, lens distortion (barrel / pincushion) becomes an unavoidable factor. Lens Distortion Corrector is a filter produces texture map correction for spherical texture mapping.
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