Is it possible to use undistortImage using a custom image I have?

7 次查看（过去 30 天）
Akshay Arvind
Akshay Arvind 2024-10-16
评论： Akshay Arvind 2024-10-22
Hi, I have acquired the image of a checkerboard (see file w_teleconverter.mat), to visualize it, scale it between [0 10000]. This is basically to assess if I can perform image distortion correction on the image that I have. Note that the image is the sharpest possible, and the camera is mounted to a spectrometer, so only part of the checkerboard is seen. However the examples that I see online are for standard calibration patterns. Would it be possible to use undistortImage for this image I have?

请先登录，再回答此问题。

采纳的回答

Deep
Deep 2024-10-22
编辑：Deep 2024-10-22
MATLAB's "undistortImage" function requires accurate camera intrinsic parameters (https://www.mathworks.com/help/vision/ref/undistortimage.html#btyx3m1-3). Estimating these parameters from a single, incomplete checkerboard image is difficult.
Your checkerboard lacks a complete view, with only one column fully visible and parts of others occluded. MATLAB's documentation (https://www.mathworks.com/help/vision/ug/prepare-camera-and-capture-images-for-camera-calibration.html#:~:text=white%20border%20surrounding) stresses the need for a white border around the completely visible pattern for accurate calibration.
The current image will result in inaccurate camera intrinsics and an incorrect "undistortImage" output. I suggest printing a smaller checkerboard and capturing at least three different images to improve calibration. Follow this guide on single camera calibration (https://www.mathworks.com/help/vision/ug/using-the-single-camera-calibrator-app.html) for detailed steps, including how to prepare the checkerboard images.
  1 个评论
Akshay Arvind
Akshay Arvind 2024-10-22
Hi, thanks for the answer! Obviously part of the image is occluded because the camera is mounted to a spectrometer, but I will remember to print an even smaller checkerboard with a white background.

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 MATLAB Support Package for USB Webcams 的更多信息

标签

产品


版本

R2024b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by