In my 16-May-2016 post about image binarization, I talked about the new binarization functions in R2016a. Today I want to switch gears and talk about Otsu's method, one of the algorithms underlying... 続きを読む >>
Image binarization – Otsu’s method 2
Steve on Image Processing with MATLABImage processing concepts, algorithms, and MATLAB
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Image binarization – new R2016a functions 3
In my 09-May-2016 post, I described the Image Processing Toolbox functions im2bw and graythresh, which have been in the product for a long time. I also identified a few weaknesses in the functional... 続きを読む >>
Image binarization – im2bw and graythresh 2
As I promised last time, I'm writing a series about functional designs for image binarization in the Image Processing Toolbox. Today I'll start by talking about im2bw and graythresh, two functions... 続きを読む >>
Image binarization – new functional designs 6
With the very first version of the Image Processing Toolbox, released more than 22 years ago, you could convert a gray-scale image to binary using the function im2bw.I =... 続きを読む >>
Problem complexity 1
Twice in the last month, I have read comments about certain problems being intrinsically hard to solve. In a fascinating book I just started to read called Algorithms to Live By, authors Brian... 続きを読む >>
CLim, caxis, imshow, and imagesc 5
In response to "MATLAB image display - autoscaling values with imshow," MATLAB Answerer Extraordinaire ImageAnalyst posted this comment:A discussion of the relationship and interplay of caxis(),... 続きを読む >>
JPEG2000 and specifying a target compression ratio 4
I was looking at some documentation yesterday and saw something that I had forgotten. When you write a JPEG2000 image file using imwrite, you can specify a desired compression ratio.OK, that sounds... 続きを読む >>
Intersecting curves that don’t intersect 5
A post in MATLAB Answers earlier this year reminded me that working on a discrete grid can really mess up apparently obvious notions about geometry.User Hg offered an image containing two... 続きを読む >>
Pausing MATLAB (R2016a) 3
MATLAB R2016a shipped earlier this month. It has a new feature that is a personal favorite: the Pause button. Have you ever sat watching MATLAB busily running your code, thinking that it was... 続きを読む >>
How old are you (in computer years)? 12
Ten years and a few days ago, I published my first blog post in this space. That is really hard for me to believe. It makes me reflect on the way technical people who work with computer technology... 続きを読む >>