Clear Filters
Clear Filters

Edge detection between position and neagtive

3 views (last 30 days)
Hi guys, Im trying to do in matlab edge detection that when I have a change value between 1 to -1 or between -1 to 1 (ranges is -1<data<1) ) so will detect this crosses/sections between moving from positive to negative or from negative to positive!
any help how can I do that edge detector in matlab? thanks alot

Answers (1)

Image Analyst
Image Analyst on 7 Jul 2020
Is this what you're looking for:
% Create sample data in the range -1 to +1.
v = 2 * rand(1, 50) - 1
% Find out which ones of those are negative.
negativeIndexes = v < 0
% Find where it goes from above 0 to below 0
crossingIndexes = strfind(negativeIndexes, [0, 1])


Find more on Introduction to Installation and Licensing in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!