Image analysis for Signal processing help

2022 5 1
2 个回答
回答已采纳
更新时间：2022 5 1
1 次查看（30 天）

0 个投票

Hello,
I have an image
How can I select a region of this image to crop out a 10x10 region of pixels and then display this on a figure window?
After this how can I perform a Discrete Cosine Transform (2D DCT) on it
and obtain the DCT coefficient values?
Thank you

请先登录，再回答此问题。

 采纳的回答

更多回答（1 个）

0 个投票

Using the Discrete Cosine Transform is quite straightforward. You'd need to employ dctmtx() fcn.
Help documentation:
doc dctmtx
Also, you can view this online documentation:
mathworks.com/help/images/discrete-cosine-transform.html

类别

在 帮助中心 和 File Exchange 中查找有关 Image Transforms 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by