# How to analyze every single pixels intensity in a video clip?

조회 수: 5 (최근 30일)
Hirithar 2024년 5월 10일
댓글: Image Analyst 2024년 5월 19일
I need help get each single pixel's intensity in a video clip (grayscale). For example, in a video clip containing 150x250 pixels and 1000 frames, I need to obtain the intensity one by one, either row-wise or column-wise.
##### 댓글 수: 4이전 댓글 2개 표시이전 댓글 2개 숨기기
Image Analyst 2024년 5월 12일
If you have, say, a million pixels in your video frame, you can't do a million line plots. But you can plot the average color or brightness of one, or a few, regions over time. This is what my Answer below does. Did you even see it (scroll down) or try it? If not, why not?
Hirithar 2024년 5월 12일
I downloaded it, I'm a medical student. I'm trying to undestand what the code is, for sure I will let you know. Thanks for the support.

댓글을 달려면 로그인하십시오.

### 답변 (2개)

Image Analyst 2024년 5월 11일
See my attached demo where I find the mean R, G, and B mean of every frame in a video and plot them. Adapt the region to what you need, like a single row or column instead of the whole frame.
##### 댓글 수: 0이전 댓글 -2개 표시이전 댓글 -2개 숨기기

댓글을 달려면 로그인하십시오.

Hirithar 2024년 5월 17일
I came up with this code for pixel analysis. Could you please take a look?
##### 댓글 수: 3이전 댓글 1개 표시이전 댓글 1개 숨기기
Hirithar 2024년 5월 19일
I'm just picking up the intensity value of a pixel by its coordinates (row, column) to plot a 3-second spectrum. In my case, the frame rate is 30 fps, which means I'm plotting the spectrum for 90 frames.
Image Analyst 2024년 5월 19일
I strongly suggest that you use all three indexes when referencing a 3-D array.

댓글을 달려면 로그인하십시오.

### 카테고리

Help CenterFile Exchange에서 Display Image에 대해 자세히 알아보기

### Community Treasure Hunt

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

Start Hunting!

Translated by