ContentsThe Shape of a PixelWeaknesses of Using the Pixel CentersSquare PixelsDiamond PixelsCircular PixelsThe Shape of a PixelWhat is the shape of a pixel? At various times, I have a pixel as a... 続きを読む >>
What is the Shape of a Pixel? 6
Steve on Image Processing with MATLABImage processing concepts, algorithms, and MATLAB
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Steve on Image Processing with MATLAB has been archived and will not be updated.
結果: imshow
Feret Diameter: Introduction 8
This is the first of a few blog posts about object measurements based on a concept called the Feret diameter, sometimes called the caliper diameter. The diagram below illustrates the concept. Place... 続きを読む >>
Gray-scale pixel values in image regions
Before I dive into today's topic, I want to invite you to come back to the MATLAB Central Blogs page in a couple of weeks. Look for something new to appear related to deep learning.Earlier today, I... 続きを読む >>
Customizing REGIONPROPS With Your Own Measurements 12
I saw a presentation last month that mentioned a user request to have the ability to customize regionprops. That is, a user wanted to be able to add their own measurement to regionprops.Today, I'll... 続きを読む >>
Chessboards, Implicit Expansion, REPELEM, and Unicode Chess Queens 1
A few weeks ago, I wrote about a solver algorithm for the Eight Queens Problem. The post included diagrams like this one. Today I want to show you how I made that diagram in MATLAB. First, let's talk... 続きを読む >>
Variation on Connected Objects – Using Graphs
Reader Uri Pe'er found an old post from 2011 about shortest paths in binary images, and he asked this follow-up question (paraphrased):How can I determine if there is a path from one row to another... 続きを読む >>
Variations on Connected Objects – Using imfill
Reader Uri Pe'er found an old post from 2011 about shortest paths in binary images, and he asked this follow-up question (paraphrased):How can I determine if there is a path from one row to another... 続きを読む >>
Logical indexing 3
One of my favorite aspects of MATLAB for image processing is how I can use a binary image to index directly into a grayscale image. The technique is called logical indexing, and I'm going to show you... 続きを読む >>
Gaussian filtering with imgaussfilt 2
With the R2015a release a couple of years ago, the Image Processing Toolbox added the function imgaussfilt. This function performs 2-D Gaussian filtering on images. It features a heuristic that... 続きを読む >>
Aliasing and image resizing – part 3 4
Today I'll try to wrap up my discussion about how aliasing affects image resizing and about how the imresize function tries to prevent it. (This is called antialiasing.) Let me show you where we are... 続きを読む >>