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Steve Eddins


MathWorks

677 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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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...

11 days ago | 0

| accepted

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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...

1 month ago

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Pixel Grid
Function pixelgrid superimposes a grid of pixel edges on an image

2 months ago | 10 downloads |

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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...

2 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...

2 months ago | 0

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

3 months ago

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

3 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.)...

3 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 >>

4 months ago

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A new image tiling function in MATLAB
I was noodling around recently with a future blog topic (multiresolution pyramids; stay tuned) when I was reminded of a...

4 months ago

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Converting from sRGB to SWOP CMYK
An Image Processing Toolbox user recently reported to us good results for using makecform and applycform to convert colors...

5 months ago

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Making your plot lines thicker
Today's blog post is dedicated to everyone whose eyes aren't as young as they used to be.... read more >>

5 months ago

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Pursuit Curves
Here's an interesting snippet I learned while working on today's blog post: Mathematician Jacob Bernoulli asked for a...

5 months ago

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Animated PNG (APNG) Files
Have you heard of animated PNG (APNG) files? Are you interested in creating them from MATLAB? They are supposed to be an...

5 months ago

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Submitted


Penrose Rhombus Tiling
Compute and visualize aperiodic Penrose rhombus tiling

8 months ago | 1 download |

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Deep Beer Designer
This post is from Ieuan Evans, who has created a very unique example combining deep learning with LSTM and beer. (Please...

9 months ago

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3 Trends in Deep Learning
And how MATLAB helps you take advantage of them. Last post*, Steve Eddins wrote about some of the new features in the...

10 months ago

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Deep Learning with MATLAB R2018b
Note: This will be my last regular post for the Deep Learning blog. Johanna Pingel will be taking over for me. You have...

10 months ago

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Deep Learning in Action – part 3
Hello Everyone! It's Johanna, and Steve has allowed me to take over the blog from time to time to talk about deep...

11 months ago

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Classify EEG Signals Using LSTM Networks
Today I want to highlight a signal processing application of deep learning. This example, which is from the Signal...

12 months ago

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Semantic Segmentation Using Deep Learning
Today I want to show you a documentation example that shows how to train a semantic segmentation network using deep learning...

1 year ago

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Superpixel Posterization
Today's blog post was inspired by an example written by my friend and Image Processing Toolbox developer, Alex Taylor. A few...

1 year ago

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Feret Properties – Wrapping Up
Today I want to finish up my long-running discussion of Feret diameters. (Previous posts: 29-Sep-2017, 24-Oct-2017,...

1 year ago

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Answered
hi i've a problem the function newline dosen't work in matlab 2016a??
The function newline was introduced in R2016b. Instead of newline, you can use char(10) or sprintf('\n').

1 year ago | 1

Answered
error - Undefined function 'extractHOGFeatures' for input arguments of type 'double and Undefined function 'detectMSERFeatures' for input arguments of typ ,
These functions are in the <https://www.mathworks.com/products/computer-vision.html Computer Vision System Toolbox>.

1 year ago | 0

Answered
How is image downsized when "Image is too big to fit on screen"?
Nearest-neighbor interpolation.

1 year ago | 1

| accepted

Published


What is the Shape of a Pixel?
What is the shape of a pixel? At various times, I have a pixel as a square (often), a point (sometimes), or a rectangle...

1 year ago

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Answered
immse same size error
Compare the output of size(X) and size(C) to double-check your assumption that X and C are the same size.

1 year ago | 0

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Resize images in multiple directories
Consider using the <https://www.mathworks.com/help/images/batch-processing-using-the-image-batch-processor-app.html Image Batch ...

1 year ago | 1

Published


Minimum Feret Diameter
Last time (if you can remember that long ago), I talked about how to find the maximum Feret diameter of a shape. The Feret...

1 year ago

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