Filter löschen
Filter löschen

compare the intensity of a pixel with the one next to it

3 Ansichten (letzte 30 Tage)
I have an Image (grayscale) and i want to compare each Pixel with the one next to it and if the value increases or decreases with more than 300 , i want to store its Location and then plot it with another Color on the picture . can any one help me please ? Thank you

Akzeptierte Antwort

Takuji Fukumoto
Takuji Fukumoto am 25 Jan. 2017
if 'one next to it' means right side pixcel, you can identify the value increase/decrease more than 300.
I = imread('filename');
r = numel(I(:,1))
ext = zeros(r,1);
I1 = [I ext];
I2 = [ext I];
I3 = I1-I2;
Iout = abs(I3) > 300;
  2 Kommentare
Walter Roberson
Walter Roberson am 25 Jan. 2017
Better is I3 = double(I1) - double(I2); because images are typically integer data class.
Yassine Zaafouri
Yassine Zaafouri am 25 Jan. 2017
my image is already double but thank you for this anyway

Melden Sie sich an, um zu kommentieren.

Weitere Antworten (0)


Mehr zu Images finden Sie in Help Center und File Exchange

Community Treasure Hunt

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

Start Hunting!

Translated by