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Steve Eddins


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MathWorks

706 2006 年以降の合計貢献数

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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Project Euler: Problem 3, Largest prime factor
The prime factors of 13195 are 5, 7, 13 and 29. What is the largest prime factor of the number being input, input might be ui...

約10時間 前

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Project Euler: Problem 2, Sum of even Fibonacci
Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 te...

約15時間 前

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Log axis with percentage tick labels
From what I can tell, the ruler object ignores the TickLabelFormat property (which is set by ytickformat) when the Scale is 'log...

約18時間 前 | 0

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Help calling my basic function
You must use the filename as the function name when calling your function. MATLAB will not pay attention to the "n" inside the f...

約19時間 前 | 1

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Why does evaluating a function with symbolic variables take so much longer than with a double?
When MATLAB performs arithmetic on normal numeric values, which are represented internally as double-precision floating-point nu...

1日 前 | 2

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Making Color Spectrum Plots – Part 3
Recently, I've been explaining how I made this plot, which is from DIPUM3E (Digital Image Processing Using MATLAB, 3rd...

約1ヶ月 前

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What is 0.01?
I was looking at these two numbers the other day:... read more >>

2ヶ月 前

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Making Color Spectrum Plots – Part 2
It was a while ago now, but on April 27 I started explaining how I made this plot, which is from DIPUM3E (Digital Image...

2ヶ月 前

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

2ヶ月 前 | ダウンロード 13 件 |

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Making Color Spectrum Plots – Part 1
The new edition of Digital Image Processing Using MATLAB (DIPUM3E) contains a number of MATLAB functions related to color,...

5ヶ月 前

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Geometric Transformation of Points – Getting Started
I like to think of geometric transformations of images (stretching, shrinking, rotating, etc.) by starting with the...

6ヶ月 前

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How to Display Color Swatches
When working on the "Color Image Processing" chapter of DIPUM3E, I found myself often wanting to display square blocks (or...

7ヶ月 前

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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...

7ヶ月 前

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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 >>

8ヶ月 前

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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 >>

9ヶ月 前

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

9ヶ月 前 | ダウンロード 5 件 |

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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....

10ヶ月 前

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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...

10ヶ月 前

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

10ヶ月 前 | ダウンロード 19 件 |

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

10ヶ月 前 | ダウンロード 5 件 |

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Penrose Rhombus Tiling
MATLAB functions for Penrose tiling

10ヶ月 前 | ダウンロード 4 件 |

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

10ヶ月 前 | ダウンロード 3 件 |

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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,...

10ヶ月 前

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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...

11ヶ月 前

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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...

11ヶ月 前

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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...

11ヶ月 前

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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...

12ヶ月 前

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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.......

12ヶ月 前

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

約1年 前

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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...

約1年 前

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