2D image improfile function help

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A Sez 2014-7-17

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https://ww2.mathworks.cn/matlabcentral/answers/142256-2d-image-improfile-function-help

回答： Image Analyst 2014-7-17

There are two things I would like to do with this function.

First one is to determine max intensity:

1. Scan the y-coordinate for the highest intensity value, then record it as the intensity for this x-coordinate. 2. Do this for the entire length of the image. 3. Plot max intensity vs x-axis.

Second is to average this intensity graph.

1. Read subsequent images (extracted frames from a video file) 2. Have an average plot of max intensity vs x-axis.

The main purpose is to identify the flame section against a black background (see attached).

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Image Analyst 2014-7-17

编辑：Image Analyst 2014-7-17

What is the question? And are you taking columns from the image as you go across (in which case you don't need improfile) or are you going from one pixel to another at an arbitrary distance and angle (in which case you'll need improfile)?

A Sez 2014-7-17

Frame_0001.png

Hi, I've attached the file. Basically I want to get the peak intensity accross the x-axis (L to R) of that picture. As you see it is quite all over the place Hope that clarifies it

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