# Is there a way to deconvolute this peak, without knowing the convoluting peaks?

조회 수: 11 (최근 30일)
Teshan Rezel 2022년 7월 20일
댓글: Bjorn Gustavsson 2022년 7월 21일
Hi folks, I have peaks that look like the attached figure. Is it possible to perform an operation on the data such that the most likely individual gaussian peaks under the graph can be isolated?
I have managed to draw gaussians in the appropriate places, but I would like to make this an automated way to deal with many more peaks. The gaussians I have are being drawn with higher peaks than the original histogram, which I have tackled by multiplying the standard deviation by a fixed number. However, this is a really "janky" solution and I was hoping for a more elegant and reliable one. I was also hoping to make the gaussians look better, bu spreading them out under the original curve more.
Is this possible?
so far, I have:
clc;
clear;
m = (0:255)';
histogramPath = 'F:\Histogram Analysis.xlsx';
x = data.(1)(2:end);
[y1, y2] = findpeaks(x, "NPeaks", 4);
p1 = normpdf(m, y2(1), y1(1)*7);
p2 = normpdf(m, y2(2), y1(2)*4);
p3 = normpdf(m, y2(3), y1(3)*4);
p4 = normpdf(m, y2(4), y1(3)*4);
figure;
hold on;
plot(x);
plot(p1);
plot(p2);
plot(p3);
hold off;

댓글을 달려면 로그인하십시오.

### 채택된 답변

Bjorn Gustavsson 2022년 7월 20일
You might get some part of the way with deconvblind, from the image processing toolbox, so check the help and documentation to that function. You ought to also temper your expectations a bit - you can only get so far with deconvolution and there is no way I'd believe in a separation of 2 peaks under the wide maxima, there will absolutely not be possible for you to convince me of a separation into multiple peaks that narrow from that broad maxima. The peak on the left - sure deconvolve that one clean and nice that should be doable.
HTH
##### 댓글 수: 6이전 댓글 4개 표시이전 댓글 4개 숨기기
Teshan Rezel 2022년 7월 21일
@Bjorn Gustavsson thank you! I've tried using the "Fit Multiple Gaussians" but I get the following.
I'm not sure if I'm doing something wrong, but it doesn't seem to take any inputs apart from the in-built gaussian!
Bjorn Gustavsson 2022년 7월 21일
@Teshan Rezel, either you've forgotten to attach or inline something or my browser is getting too old, because I cannot see anything of what you refer to with "get the following".

댓글을 달려면 로그인하십시오.

### 카테고리

Help CenterFile Exchange에서 Bartlett에 대해 자세히 알아보기

R2022a

### Community Treasure Hunt

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

Start Hunting!

Translated by