matlab图像示例笔记3

发表于 2020-02-10 更新于 2020-10-31 阅读次数： Valine：

本文字数： 597 阅读时长 ≈ 1 分钟

mat2gray 将dicom变为grey
im2uint8

The image on the right has higher contrast, with intensity values that fill the entire intensity range [0, 255].

~~如果指定空矩阵 ([])，则 imshow 使用 [min(I(:)) max(I(:))]。换言之，使用 I 中的最小值作为黑色，使用最大值作为白色。~~

imadjust
You must specify the intensities as values between 0 and 1 regardless of the class of I. If I is uint8, the values you supply are multiplied by 255 to determine the actual values to use; if I is uint16, the values are multiplied by 65535.

figure, imshow(pout_histeq);
title(‘Histeq’);

ROI
Create a Binary Mask
You can use the createMask function of the imroi base class to create a binary mask for any type of ROI object — impoint, imline, imrect, imellipse, impoly, or imfreehand.