![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/176416/image.jpeg)
Reconstruct Gaussian fitted Beads
조회 수: 2 (최근 30일)
이전 댓글 표시
I have gaussian fitted a bead in an image and I have its x & y coordinate, standard deviation (std) of the gauss fit as well as amplitude (amp). Is there a way to reconstruct the bead from the x,y,std & amp values?
댓글 수: 0
채택된 답변
Image Analyst
2014년 10월 30일
Try this:
grayImage = zeros(480, 640, 'uint8');
[rows, columns] = size(grayImage);
xCenter = 200;
yCenter = 300;
sigma = 50;
sigmaSquared = sigma^2;
amplitude = 255;
[X, Y] = meshgrid(1:columns, 1:rows);
grayImage = exp(-((X-xCenter).^2 + (Y-yCenter).^2) ./ sigmaSquared);
imshow(grayImage, []);
axis on
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/176416/image.jpeg)
댓글 수: 3
Image Analyst
2014년 10월 31일
편집: Image Analyst
2014년 10월 31일
You could use it like this:
grayImage = amplitude * exp(-((X-xCenter).^2 + (Y-yCenter).^2) ./ sigmaSquared);
I chose that so that the numbers would go from 0 - 255, and if they did, I could cast to uint8 and display it with imshow() without the []. But I must have forgotten to put it in when I remembered imshow() can display floating point images scaled to 0-255 for display if you use the [] as the second input argument.
If it's "closer" but not enough to officially "Accept" the answer, then let me know exactly what you are looking for. For example, attach a screenshot or image or something to fill in the details missing from your original question.
추가 답변 (0개)
참고 항목
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!