Steve on Image Processing with MATLAB

Image processing concepts, algorithms, and MATLAB

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Steve on Image Processing with MATLAB has been archived and will not be updated.

Posts 51 - 60 of 478

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How to display images with bilinear interpolation and antialiasing 6

Note: this blog post describes an image display feature that is new in R2019b. You can download this release from https://www.mathworks.com/downloads.This is my new favorite image: But that's just a... 続きを読む >>

The tool builder’s gene (or how to get a job at MathWorks) 8

In my second year of grad school (1987-88), my thesis advisor asked me to develop some PC-based digital signal processing (DSP) tools to be used for computer-based lab assignments. (At the time,... 続きを読む >>

Using the Color Threshold app again 3

Back in the summer I had another chance to use the Color Thresholder, a very nice app that's in the Image Processing Toolbox. I happened to come across a question on MATLAB Answers - someone was... 続きを読む >>

Documenting performance improvements 7

I recently noticed a change in the way we write some of our product release notes, and I wanted to mention it to you.In my quarter century at MathWorks doing toolbox and MATLAB development, there... 続きを読む >>

New Hubble portrait of Jupiter

I thought this was worth sharing. From NASA's hubblesite.org: This new Hubble Space Telescope view of Jupiter, taken on June 27, 2019, reveals the giant planet's trademark Great Red... 続きを読む >>

Using reshape to rearrange image color components 4

I recently saw some code that transformed the RGB pixel values of an image into a Px3 matrix, such that each row contained the red, green, and blue color components of a single pixel. Today I want to... 続きを読む >>

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. -SteveThe Image Processing Toolbox function ordfilt2 can be used to perform various... 続きを読む >>

Color correction with a parula quilt 1

My wife, Geri Eddins, has been making a lot of quilts lately. A few months ago, I printed out these 10 colors, showed them to her, and asked, "Can you make a wall hanging quilt with this color... 続きを読む >>

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 loved both of them, and I wanted to share them with you. The first one... 続きを読む >>

pixelgrid

ContentsIntroductionFind the image objectGet the spatial coordinates for drawing the outlineConstruct the x- and y-vectorsDraw the linesIntroductionSome years ago, I blogged about how to overlay a... 続きを読む >>

Posts 51 - 60 of 478