Simulate speckle pattern to analyze using speckle tracking
显示 更早的评论
Hello,
I want to create an phantom of a horseshoe which contained speckles to analyze this afterwards using speckle tracking to validate a program. The speckles has to move in approximately 10 frames in one direction (left-right).
I've tried the function imnoise('speckle', variance), but this gives not the required result because it creates noise and I'll follow the speckle.
Thank you for helping me. Best regards
回答（1 个）
Image Analyst
2015-8-11
0 个投票
I don't know what that means. 'speckle' creates multiplicative noise. If you want a true speckle like from a laser then you'll have to use a different function because it has a different probability density function. If all you want is random bright dots, you can use randi() or imnoise('salt & pepper').
2 个评论
Paula Bos
2015-8-11
Image Analyst
2015-8-11
Yes, you can use the 'salt & pepper' option. Maybe you can use circshift() to translate the dots. These are pretty simple functions to use and call (in fact you've already used imnoise), but let me know if you have trouble.
类别
在 帮助中心 和 File Exchange 中查找有关 Geometric Transformation and Image Registration 的更多信息
2015-8-11
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
