Question

Improper Disparity map obtained for stereo scene reconstruction

I have done stereo calibration using the Stereo Camera Calibrator App available in MATLAB R2014b. When I obtain the results o...

9 years ago | 1 answer | 0

Question

Angle between two best-fit planes

I have a set of points (as in |Points3D.mat| attached here). I find the equation of best fit plane using |affine_fit| by <http:/...

9 years ago | 1 answer | 0

Question

Function/s equivalent to "bwareaopen" and '''bwconhull' supported for C / C++ code generation

This is with reference to <http://in.mathworks.com/matlabcentral/answers/195933-function-imfindcircles-detects-false-circles cod...

9 years ago | 0 answers | 0

Question

Function: imfindcircles detects false circles.

I have come across this a few times. The function |imfindcircles| detects false circles (like at the corners shown below) even w...

9 years ago | 2 answers | 0

Question

Reconstruction of 3D model using three 2D images (looking at the same object in 3 different views)

I came across a requirement to reconstruct 3 dimensional image of an object using three cameras placed around it such that it (e...

9 years ago | 0 answers | 1

Answered

Help regarding Image Segmentation of B/W Image!!

Try using the Morphological operators dilation and erosion.

Help regarding Image Segmentation of B/W Image!!

Try using the Morphological operators dilation and erosion.

9 years ago | 0

Answered

i want to compare two images on the basis of PSNR

This is about <http://in.mathworks.com/help/images/ref/psnr.html PSNR>.

i want to compare two images on the basis of PSNR

This is about <http://in.mathworks.com/help/images/ref/psnr.html PSNR>.

9 years ago | 0

Answered

i am executing the code given in the matlab documentation and getting the error'Undefined function 'psnr' for input arguments of type 'double'.

As far as I know, only |A| should be of type |double|. Also, check if you have the necessary toolbox and the right version of M...

i am executing the code given in the matlab documentation and getting the error'Undefined function 'psnr' for input arguments of type 'double'.

As far as I know, only |A| should be of type |double|. Also, check if you have the necessary toolbox and the right version of M...

9 years ago | 0

Answered

Fit surface to large data set

Hey, You can see <http://in.mathworks.com/matlabcentral/fileexchange/43305-plane-fit Plane fit by Adrien Leygue>. I have used...

Fit surface to large data set

Hey, You can see <http://in.mathworks.com/matlabcentral/fileexchange/43305-plane-fit Plane fit by Adrien Leygue>. I have used...

9 years ago | 0

Question

Fill a circle enclosed by it's circumference (of type double) with white.

I want to fill a specific region on an image with white (value 255). The specific region forms a circle. (whose co-ordinates of ...

9 years ago | 2 answers | 0

Question

SNR for image (No-Reference)

I have a .bin file (a 12 bit image). How should I caculate the SNR of this? I am aware that SNR computation needs one clean and ...

9 years ago | 2 answers | 0

Question

Template matching not necessarily invariant to rotation and scale, but should detect artifacts (of 3X3 pixels or more)

I want to compare a specific pattern (as on _template_ image) and output "yes"/"no" according to the match. I don't require the ...

9 years ago | 0 answers | 0

Question

Sub-pixel vertical edge detection.

Hi. I want to detect edge (with sub-pixel accuracy) in an image like this: <</matlabcentral/answers/uploaded_files/2605...

9 years ago | 0 answers | 0

Question

Support for MATLAB functions "medfilt2" and "adapthisteq" on Simulink

Hi, I want to use the MATLAB functions |medfilt2| and |adapthisteq| on Simulink (and then Xilinx System Generator). Before s...

10 years ago | 2 answers | 0

Question

codegen build error on Windows

I am using codegen for the first time, following the instructions given <http://in.mathworks.com/help/images/code-generation-for...

10 years ago | 1 answer | 0

Question

Break-up of CLAHE algorithm such that HDL Coder can support it.

I want to execute CLAHE algorithm (as used in the function |adapthisteq|). This function, |adapthisteq| is not supported by cod...

10 years ago | 2 answers | 0

Question

Angle between two planes on the X=0, Y=0 and Z=0 planes

Hi, I am plotting two planes using the code mentioned here. I am using <http://www.mathworks.com/matlabcentral/fileexchange/4...

10 years ago | 1 answer | 1

Question

Extract outermost contour from a set of contours.

I have an N X 2 matrix with the x,y co-ordinate values of the edges. I plot these co-ordinates (plotted in red displayed below i...

10 years ago | 1 answer | 0

Question

Detect outer contour and find contour's co-ordinates, at sub-pixel level, ignoring noise.

Hi, I want to find the co-ordinates of an object's contour (similar to a circular rim) which will be rotated in 3D. This nee...

10 years ago | 2 answers | 0

Answered

how to display image in gif

Have you gone through the other solutions on this forum? http://in.mathworks.com/matlabcentral/answers/36160-displaying-gif-i...

how to display image in gif

Have you gone through the other solutions on this forum? http://in.mathworks.com/matlabcentral/answers/36160-displaying-gif-i...

10 years ago | 0

Question

Simpler way without for loops

How can I implement this without using for loops? for i = 1:i_rows Mat_NX3(i,1) = (Mat_A_3D (idx(i,1), id...

10 years ago | 3 answers | 1

Question

Find corresponding positions in stereo rectified images on 3D pointCloud

In a 1000 X 1000 image (rectified stereo pair), _I_left_ , I have features detected at positions: P_left = 124.9147949218...

10 years ago | 1 answer | 1

Question

Incorrect angle detected between two planes

I want to calculate the angle between 2 planes, Reference plane and Plane1. I've attached the NX3 and MX3 matrices containing t...

10 years ago | 0 answers | 1

Answered

How to write FOR LOOP in Matlab?

[1 2 3]' means transpose of [1 2 3] so it becomes: [1 2 3] This is the first column of A Similarly, you get [3 ...

How to write FOR LOOP in Matlab?

[1 2 3]' means transpose of [1 2 3] so it becomes: [1 2 3] This is the first column of A Similarly, you get [3 ...

10 years ago | 0

Answered

Changing pixel color to white

I assume your image is an RGB image. Use this to get only the red plane: Image_r = Image(:,:,1) You have to know the int...

Changing pixel color to white

I assume your image is an RGB image. Use this to get only the red plane: Image_r = Image(:,:,1) You have to know the int...

10 years ago | 0

Question

Specifications of checkerboard for stereo reconstruction with maximum accuracy?

I have to reconstruct an object which will be placed around 1 meter to 1.5 meters away from the baseline of my stereo setup. The...

10 years ago | 1 answer | 1

Answered

how to set specific limits for a colorbar

Use caxis([min, max]). By default is considers the min and max values of you data plot. subplot(2,1,1) % default case ...

how to set specific limits for a colorbar

Use caxis([min, max]). By default is considers the min and max values of you data plot. subplot(2,1,1) % default case ...

10 years ago | 0

Question

Remove Inf and NaN values in a Point Cloud in the fastest way

If I have a matrix A A = [1, 11, 21; NaN,12, 22; 3, 13, Inf; NaN,14, NaN; 5, Inf, NaN; ...

10 years ago | 2 answers | 0

Question

Reason for Checkerboard Corner Detection to Fail

I am using MATLAB R2014b to calibrate a stereo setup. I have 150 images of my checkerboard at various angles and distances. Wh...

10 years ago | 2 answers | 1