Rotate an image 180 degrees without library functions

47 次查看（过去 30 天）
Poojha Palle
Poojha Palle 2022-9-5
回答： James Tursa 2022-9-5
I am tasked with rotating an image using a single line of Matlab code. I'm unsure how to do this without using built-in rotate functions. Any help or advice would be appreciated, thank you!
The function I am supposed to write has one input, that being the image, and expects a "results" output that stores the rotated image.
function result = image_rotation(image)
% insert one line of code here
end

请先登录，再回答此问题。

回答（2 个）

Image Analyst
Image Analyst 2022-9-5
Hints: Look at the transpose operator -- the apostrophe. Also look at indexing with a negative 1 step.
[rows, columns, numColorChannels] = size(yourImage);
indexes = rows : -1 : 1;
Do not call your variable "image" since that is the name of an important built-in function.
Good luck with your homework.
James Tursa
James Tursa 2022-9-5
Hint: Take a small example, rotate it 180 degrees, and see where the elements end up. Then consider how you might get that result with indexing into the original matrix.

类别

在 Help Center 和 File Exchange 中查找有关 Matrix Indexing 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