Answered
Need Help Regarding Log-Map of Images
The following link is a good starting point for an example of a log-polar image resampler in MATLAB. You appear to have already ...

12 years ago | 1

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Answered
how to registering an Image?
After looking again, I can see the features that correspond in these two images. If you don't have a lot of images like these to...

12 years ago | 1

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how to registering an Image?
Looking at these images, I see at least two potential problems: 1) Visually, it's tough for me to see where the regions of al...

12 years ago | 2

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Apply transform on an image at lower resolution onto that of higher resolution
You have an estimate for rotation, scale, and translation. Ideally, the rotation and scale estimates that you obtain at lower sc...

12 years ago | 1

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Answered
How can i detect circle in a eye image? Mainly the iris region.
You should start with imfindcircles and see if that works: http://www.mathworks.com/help/images/ref/imfindcircles.html

12 years ago | 0

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Answered
Algorithm of Bicubic Interpolation
The algorithm is described in the following reference. % "Cubic Convolution Interpolation for Digital Image % Processing", R...

12 years ago | 0

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Answered
Using cell arrays and find. Undefined function 'le' for input arguments of type 'cell'.
LE is the less than or equal to operator in the statement subdewfinal{i}<=dew_final1{i} These items have still not been ...

12 years ago | 0

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Answered
How do I create a sub image of a larger image?
In addition to this demo, you might also take a look at roipoly. You can use the logical image returned by roipoly as a mask. h...

12 years ago | 0

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How to change the pixel value of rgb unit8 image to NaN or black
I think we would need some clarifying information to answer this question. What does it mean to have a pixel value "greater" ...

12 years ago | 0

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Why can't MATLAB resize an image nicely?
Would you please provide some code as to how you are displaying, resizing, and exporting the data from MATLAB so that we can bet...

12 years ago | 1

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3D image registration for CT to Laser
imregister/imregtform were enhanced to support volumetric registration a few releases ago, for anyone just now coming to this th...

12 years ago | 0

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Are there any documents about imregister?
The following block diagram from the doc is a good overview of the basic algorithmic approach: http://www.mathworks.com/help/...

12 years ago | 2

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How does imregister work?
Marina, Thank you the feedback. The documentation for imregtform/imregister could be improved to include more information abo...

12 years ago | 1

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Finding a specific edge in multiple images?
Lea, I will look into this a bit, I'm busy with other things at the moment. I do have a couple other questions for you though: ...

12 years ago | 0

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Question on Image transformation
Hi Mubeen, If you have R2013a, you should look at the class projective2d and the function imwarp. http://www.mathworks.c...

12 years ago | 1

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imtransform, tracking a projection destination of some pixel
I cannot tell from your code example what you are trying to accomplish. It's also not clear from your question how the Auto-Scal...

12 years ago | 1

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Performance Issue of 'imrotate' in double precision mode
Hi Dehuan, As Teja pointed out, IMROTATE was hardware optimized for double-precision inputs in R2012b. If you are able to upd...

12 years ago | 0

Solved

Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

12 years ago

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Describe angulated slices using imref3d
Hi Wouter, The functions imref2d and imref3d are currently limited to rectilinear referencing. In your case, it sounds like t...

12 years ago | 1

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imregister function and affine transformation
As of R2013a, users who want access to the geometric transformation estimate computed by imregister can call the function imregt...

12 years ago | 0

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Answered
Can imregister provide transformation details on the registeration of the moving image?
As of R2013a, users who want access to the geometric transformation estimate computed by |imregister| can call the function |imr...

12 years ago | 2

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What is the difference between IMWARP and IMTRANSFORM?
The new function |imwarp| is part of a redesign of workflows involving image registration, geometric transformations, and spatia...

12 years ago | 3

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imregister function and affine transformation
You can use the 'DisplayOptimization' Name/Value pair to get a textual display of the transformation estimate. There is no way c...

13 years ago | 0

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How to get the Region of Interest using impoly?
Look at the createMask method of impoly. For example. figure, imshow('pout.tif'); % Place polygon interactively. h...

13 years ago | 1

Solved

Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

13 years ago

Solved

Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

13 years ago

Solved

Is my wife right?
Regardless of input, output the string 'yes'.

13 years ago

Solved

Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

13 years ago

Solved

Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

13 years ago

Answered
how to save image in axes gui?
Image Analyst's answer is great. I would only add that if the image in your GUIDE GUI has been somehow modified from the version...

13 years ago | 1