Answered
is there a bug in imregcorr-function for transformtype "rigid" ?
As of R2024b, the function imregcorr uses a new algorithm called normalized gradient correlation. See my 16-Oct-2025 blog post f...

8 months ago | 0

| accepted

Answered
Registering high resolution image with blurry image
As of R2024b, the function imregcorr uses a new algorithm called normalized gradient correlation. See my 16-Oct-2025 blog post f...

8 months ago | 0

Answered
imregcorr() misaligns images badly
As of R2024b, the function imregcorr uses a new algorithm called normalized gradient correlation. See my 16-Oct-2025 blog post f...

8 months ago | 1

Answered
Image registration with different x and y scales
I know I'm 5+ years late to this question, but I just now came across it while reviewing old questions about imregcorr. The tra...

8 months ago | 0

Solved

Calculate area of sector
A=function(r,seta) r is radius of sector, seta is angle of sector, and A is its area. Area of sector A is defined as 0.5*(r^2...

8 months ago

Answered
Specifying color as hex works for plot, but not for scatter
I believe this is a bug, and I recommend that you report it to MathWorks support. Perhaps it was an oversight from when hex colo...

8 months ago | 0

Solved

Create a cell array out of a struct
Create a cell array out of a (single) struct with the fieldname in the first column and the value in the second column: in: ...

8 months ago

Answered
Weird LaTeX result of $\tilde{}$ in R2025b version.
It looks like graphics LaTeX renderer has changed. It is now producing something that looks similar to what is shown in the MATL...

8 months ago | 0

Answered
Mapping toolbox functions missing in installation
These functions are implemented as methods of certain classes, such as MapCellsReference or GeographicCellsReference. As methods...

8 months ago | 0

| accepted

Discussion

Blog series on the history of image display in MATLAB
I have started a blog series on the history of image display in MATLAB. If this topic interests you, and if there is something i...

10 months ago | 5

Discussion

Simple text processing tips and tricks with file I/O, string patterns, and directed graphs
I wanted to turn a Markdown nested list of text labels: - A - B - C - D - G - H - E - ...

1 year ago | 3

Discussion

An update to "The tool builder's gene"
In 2019, I wrote a MATLAB Central blog post called "The tool builder's gene (or how to get a job at MathWorks)." In it, I explai...

1 year ago | 7

Submitted

Pixel Grid
The MATLAB function pixelgrid shows the edges of image pixels.

1 year ago | 1 download |

5.0 / 5

Submitted

Image Zoom Level and Pan Utilities
Image zoom level and pan functions

1 year ago | 2 downloads |

0.0 / 5

Discussion

Changing Some MATLAB Plotting Defaults
Over the last 5 years or so, the highest-traffic post on my MATLAB Central image processing blog was not actually about image pr...

1 year ago | 7

Question

Where is the programmable setting corresponding to the Live Editor default view?
The settings UI panel for MATLAB -> Editor/Debugger -> Display includes this control: Where can I find the corresponding pr...

1 year ago | 1 answer | 2

1

answer

Discussion

Issues with Add-On Versioning
General observations on practical implementation issues regarding add-on versioning I am making updates to one of my File Excha...

1 year ago | 2

Answered
Are there any faster alternatives to readlines?
Try this: Read the file using fileread. Convert to string. Call split. Using Walter's idea for a sample text file: filename...

1 year ago | 1

| accepted

Discussion

Adding a Button to an Existing Axes Toolbar Should Be Easier
In one of my MATLAB projects, I want to add a button to an existing axes toolbar. The function for doing this is axtoolbarbtn: ...

1 year ago | 4

Discussion

Thoughts about TIMEIT
I just published a blog post called "The Story of TIMEIT." I've been thinking about writing something like this ever since Mike ...

1 year ago | 5

Discussion

It's time to retire and replace IMSHOW
Speaking as someone with 31+ years of experience developing and using imshow, I want to advocate for retiring and replacing it. ...

1 year ago | 8

Discussion

Evolution of arguments-block functionality
I wish I knew more about the intended evolution of the capabilities of the function arguments block. I love implementing functio...

1 year ago | 5

Answered
Vertical blank space in tiledlayout compact
Trying setting TileSpacing to compact or tight. t=tiledlayout(2,2,'Padding','compact','TileSpacing','compact'); Or: t=tiledla...

2 years ago | 1

Answered
What is the Image Processing Toolbox Convention for Input to freqz2() ?
The convention for Image Processing Toolbox filter design functions is for the filter to be specified as a correlation kernel. T...

2 years ago | 1

| accepted

Submitted

FFT Transform Length
Computes optimized transform length for FFT computations

2 years ago | 1 download |

0.0 / 5

Submitted

Initialize a MATLAB Toolbox
Create a basic set of folders and files for a MATLAB toolbox

2 years ago | 2 downloads |

0.0 / 5

Answered
Axes in dialog box turn blank after calling imagesc in pushbutton callback
This is a strange one. The primary trigger for the unusual behavior is that the dialog function creates a figure with an empty c...

3 years ago | 2

| accepted

Answered
How to measure the correct circularity??
R2023a Update: Correcting regionprops Circularity Measurements That Are Greater Than 1.0 Image Processing Toolbox R2023a or Lat...

3 years ago | 1

Answered
How to detect circularity more accurately than 4*pi*A/P^2?
R2023a Update: Correcting regionprops Circularity Measurements That Are Greater Than 1.0 Image Processing Toolbox R2023a or Lat...

3 years ago | 3

Answered
regionprops circularity value >1 and 0 ?
R2023a Update: Correcting regionprops Circularity Measurements That Are Greater Than 1.0 Image Processing Toolbox R2023a or Lat...

3 years ago | 2