3
votes
Point Pattern Recognition
I am very surprised why no-one mentioned methods of Generalized Hough Transform family. They directly solve this particular problem.
Here is what I propose:
Take the template and create the R-table,...
- 5,515
3
votes
Accepted
Digital Image Processing Textbook with Specific Topics
A fundamental book on image processing for electrical engineers is
Jae S. Lim - Two-Dimensional Signal and Image Processing
A highly recommended one, again, for electrical engineers is
Anil Jain - ...
- 28.4k
2
votes
Estimates sub-pixel shift directly in phase region
I am unable to comment on your Matlab code, but eq. (14) seems straightforward to me. You have a phase difference field $\theta$ which depends on the two spatial wavenumber components $k_1$ and $k_2$,...
2
votes
Affine transformation without imwarp
To find coordinate or index of drew region, first you have to find the coordinate of 4 colored dots, which is easily obtained by using the transformPointsForward ...
- 1,417
2
votes
Accepted
What does "invariant to bias and gain changes" mean?
You need to be careful when reproducing formulas! Your $i_r$, $i_w$ are actually $\bar{i_r}$, $\bar{i_w}$ in the paper and two sentences above $(4)$, it says these are
their zero-mean versions, ...
- 32.8k
2
votes
Accepted
Removing dark borders in Image Stitching for Panorama
This solution has 2 parts :
Outer Perimeter
Inner Perimeter
MATLAB script available by email on request to any of these : [email protected] [email protected]
1.- OUTER PERIMETER
...
2
votes
Accepted
Derivative of mutual information in EMMA algorithm for image alignment
I am not an expert on mutual information but I understand a fair bit of the mathematics here.
So, I read the paper and indeed there seems some typo in the equation $(17)$. I am yet to figure that out.
...
- 36
1
vote
Accepted
Calculating satellite position from images taken by the satellite of the earth surface
There are three approaches to this:
The ISS is in a specific orbit above the Earth. You took the images on a specific date and time. You can query exactly where the ISS was at that date and time and ...
- 10.7k
1
vote
Accepted
Whats the difference between spatial and temporal resolution?
A good 1d example of this is the foundation of the FFT algorithm in how an $N$ length DFT can be created from two $N/2$ length DFTs. If you look under the hood of this, we are increasing the ...
- 55.1k
1
vote
Digital Image Processing Textbook with Specific Topics
This is the list I'd recommend:
Rafael C. Gonzalez, Richard E. Woods - Digital Image Processing
Great introductory book. Well written, a lot of examples. Though it is not deep in any of the fields.
...
- 20.5k
1
vote
Accepted
Transforming Non-Uniformly Sampled Image onto Rectangular Grid
You are trying to achieve something called interpolation and this can be done in roughly one line using MATLAB.
Interpolation is well explained over the web so I won't detail the functioning in this ...
- 378
1
vote
Finding the four corners of each quadrilateral shapes in an image
I though of using a corner detector like harris, but it gives me many additional corners (as the sides of the shapes are not really straight due to discretization.
In that case you should keep only ...
- 1,976
1
vote
Estimating scaling and translation between two consecutive temporal images
I feel there is no the best method to solve this, but if you do not have some specific feature point to track, I suggest using optical flow a below:
compute optical flow of two frames,
find the ...
- 1,976
1
vote
How can we combine 2D image with 3D image for the same sense?
Formally speaking, you would like to extrinsically calibrate the laser scanner to the 2D image. I have taken the liberty to edit your question to reflect that.
Here is how my initial approach would ...
- 5,515
1
vote
Point Pattern Recognition
This is a good application for geometric hashing. geometric hashing wikipedia page
- 11
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