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Steve Eddins


Last seen: 6 days ago

MathWorks

695 total contributions since 2006

MATLAB user since 1987. MathWorker since 1993. Amateur French horn player. MATLAB design and development, image processing algorithms.

Image processing blog: https://blogs.mathworks.com/steve/

Deep learning blog: https://blogs.mathworks.com/deep-learning

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Contributions in
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Submitted


MATLAB Color Tools
MATLAB Color Tools is an experimental collection of MATLAB functions related to color science computation and visualization.

26 days ago | 21 downloads |

Published


Digital Image Processing Using MATLAB, 3rd edition
The 3rd edition of Digital Image Processing Using MATLAB (DIPUM3E) has just been published, at long last. The new edition...

26 days ago

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Treble clefs, Unicode, SVG, strings, Bézier curves, kron, implicit expansion, and polyshape
Today I will show you how I plotted this treble clef symbol in MATLAB:... read more >>

2 months ago

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How to Write Animated PNG (APNG) Files from MATLAB
Today, I'm writing about how to create animated PNG (APNG) files, such as this one:... read more >>

3 months ago

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Submitted


Animated PNG (APNG) Writer
Create APNG (animated PNG) files

3 months ago | 4 downloads |

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How to Go a Little Crazy with Graphics Titles
The title function is the third most commonly-used function in my 13 years of writing this blog, after imshow and imread....

4 months ago

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How to Overlay a Color on an Image Using a Mask
In my first year of writing this blog (2006!), I showed how to overlay a color onto an image based on a mask. This was the...

4 months ago

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Submitted


Image overlay
Overlay a binary mask onto an image using a specified color

4 months ago | 51 downloads |

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Submitted


Zone plate test image
MATLAB function to create a zone plate test image

4 months ago | 5 downloads |

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Penrose Rhombus Tiling
MATLAB functions for Penrose tiling

4 months ago | 5 downloads |

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Submitted


Pixel Grid
MATLAB function that superimposes a grid of pixel edges on an image

4 months ago | 8 downloads |

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Published


How to Read and Visualize a DICOM Volume
Earlier this year, I learned something about DICOM datasets that surprised me. I had downloaded a Head-Neck CT+PET study,...

4 months ago

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Published


Guess the functions and get a t-shirt
Of all the MATLAB or MathWorks toolbox functions that have been mentioned in this blog since 2006, imshow and imread have...

5 months ago

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How to display images with bilinear interpolation and antialiasing
Note: this blog post describes an image display feature that is new in R2019b. You can download this release from...

5 months ago

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The tool builder’s gene (or how to get a job at MathWorks)
In my second year of grad school (1987-88), my thesis advisor asked me to develop some PC-based digital signal...

5 months ago

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Using the Color Threshold app again
Back in the summer I had another chance to use the Color Thresholder, a very nice app that's in the Image Processing...

6 months ago

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Documenting performance improvements
I recently noticed a change in the way we write some of our product release notes, and I wanted to mention it to you.......

6 months ago

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New Hubble portrait of Jupiter
I thought this was worth sharing. ... read more >>

7 months ago

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Using reshape to rearrange image color components
I recently saw some code that transformed the RGB pixel values of an image into a Px3 matrix, such that each row contained...

7 months ago

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Published


The curious case of ordfilt2 performance
For today's post, I'd like to welcome guest author Kushagr Gupta, a developer on the Image Processing Toolbox team....

9 months ago

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Answered
Any way to polish / improve the output produced by the Lab colour space segmentation.
I used the Color Thresholder app in the Image Processing Toolbox to give this a try. rgb = imread('b4.jpeg'); colorThresholder...

9 months ago | 1

| accepted

Published


Color correction with a parula quilt
My wife, Geri Eddins, has been making a lot of quilts lately. A few months ago, I printed out these 10 colors, showed them...

9 months ago

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Fourier series and Hilbert curve animations
In a complete coincidence, two different coworkers today sent me links to two different works of 3Blue1Brown on YouTube. I...

9 months ago

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Published


pixelgrid
Some years ago, I blogged about how to overlay a pixel grid on an image, so that you could clearly see pixel boundaries on a...

10 months ago

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Published


Multiresolution pyramids part 4: Image blending
Today I want to wrap up (for now) my series on multiresolution pyramids by showing you how to make this strange-looking...

10 months ago

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Answered
Raw image file conversion in MATLAB
Steffen, I have seen your tech support case escalation, and I have looked at the file you sent to MathWorks. The MATLAB functi...

11 months ago | 0

Published


Changes to SUM and DIM
Does this line of code make you raise your eyebrows in puzzlement?... read more >>

11 months ago

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Published


Multiresolution pyramids part 3: Laplacian pyramids
In my April 2 post, I introduced multiresolution pyramids, and I explained my dissatisfaction with the function impyramid,...

12 months ago

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Multiresolution image pyramids and impyramid – part 2
Last time, I talked about the function impyramid and how I have been dissatisfied with it. (Confession: I designed it.)...

12 months ago

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Multiresolution image pyramids and impyramid – part 1
There's a function in the Image Processing Toolbox that I'm not especially fond of: impyramid.... read more >>

12 months ago

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