How to rescale the image?

Question

Chathu 2015-3-9

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/182177-how-to-rescale-the-image

评论： Chathu 2015-3-10

I have set of true color images(about 700 images) and the image size: 1482 rows and 1506 columns. What i would like to do :

1) Rescale those images (currently i have pixel values but i need to get them either in cm/mm)

2) Find the minimum size for all the images and rescale all the images to that size. How to get along with this? Any suggestions?

Thanks in advance.

2 个评论
显示无隐藏无

jose soares 2015-3-9

help "whos" - size bites help "imresize" - resize a image help "sizes" - dimension of a matriz

God work!

Chathu 2015-3-10

编辑：Chathu 2015-3-10

Well i think i have missed out some part in my question- really sorry about that.

imresize doesn't help much(atleast in the beginning) of this task. Reason is that i have an image and that image has a physical ruler placed on it. So what i want here is to find the x axis and y axis distance. Again, i want the distance in cm/mm not in pixel. Since there are lot of images i would like to run it for the whole batch and scale down all the images to the minimum x and y values. Any link/website that i can refer to?

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Image Analyst 2015-3-10

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/182177-how-to-rescale-the-image#answer_170751

spatial_calibration_demo.m

See my attached spatial calibration demo. Once you know the size or location that you want to extract from the image, you can call imresize() and imcrop() to do that.