Despite recent appearances on the blog, I still exist! It's just been a little crazier than usual for the last month or so.Anyway ... I'm back, and I'm going to try to wrap things up about image... read more >>
Adaptive thresholding for binarization
Steve on Image Processing with MATLABImage processing concepts, algorithms, and MATLAB
Note
Steve on Image Processing with MATLAB has been archived and will not be updated.
Results for: 2016
Image binarization – Otsu’s method 2
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... read more >>
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... read more >>
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... read more >>
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 =... read more >>
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... read more >>
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(),... read more >>
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... read more >>
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... read more >>
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... read more >>