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Giridharan Kumaravelu

Last seen: 9 days ago |  Active since 2021

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Answered
Incorrect result from camera calibrator app
Thanks for providing the calibration images. This is a limitation of the technique (Zhang's algorithm) that camera calibrator ap...

11 months ago | 0

| accepted

Answered
Get Undistorted Camera Matrix
The answer to this question depends on undistortImage function's Name-Value argument OutputView. If it is not used and left to u...

1 year ago | 0

Answered
How to get normalized pixel values
Here are the answers to your questions: f in that equation refers to fx in pixels That equation is incomplete as it is missing...

1 year ago | 0

| accepted

Answered
Camera Calibrator App Asymmetric Circles Grid Detection Issue
The Camera Calibrator App does not support Circle Grid Patterns with white circles. It assumes the images contain black circles ...

2 years ago | 0

| accepted

Answered
When I use Matlab coder，This problem occurs，“Undefined function or variable 'outputLimits'.”
Thank you for reporting this issue. This issue is a bug in the code generation part of the example. As an interim workaround, p...

2 years ago | 0

| accepted

Answered
Camera Intrinsics for camera 2 not returned by estimateCameraParameters.
It looks like the estimateCameraParameters function did not have sufficient number of quality points to converge to a better sol...

2 years ago | 1

Answered
"planetoplane" for "pcregistericp" in ICP algorithm?
Starting R2022b, pcregistericp supports the planeToPlane metric that uses the Generalized-ICP algorithm for registration.

2 years ago | 1

Answered
ICP using pcregistericp with forcing Scale matrix to identity
The pcregistericp function only estimates a rigid transformation (rotation and translation only, no scale). That means the incom...

2 years ago | 1

| accepted

Answered
Trouble getting worldToImage to reproduce the reprojection points shown in the Stereo Camera Calibrator
The major differences between the workflow in your code snippet and that of in the calibrator app are mentioned below. In the ca...

3 years ago | 0

Answered
Bad Image Rectification after Stereo Calibration and Image Rectification (From 2D to 3D)
I agree with Benjamin here on the number of calibration images used in the calibrator app. Two image pairs looking similar in or...

3 years ago | 0

Answered
What is the difference of 'Low' and 'High' image distortion in Camera Calibrator App
When an image is distorted, straight lines in the image appear to be curved. Image distortion is typically high in cameras with ...

3 years ago | 0

| accepted

Answered
cameraIntrinsicsFromOpenCV does not seem to account for differences in distortion model
The two equations mentioned in your question are essentially the same if the higher order radial distortion coefficients (k4-k6)...

3 years ago | 0

| accepted