im2gray 和 rgb2gray 函数在转换图像到灰度格式时，存在本质差异。im2gray 函数能够直接接受灰度图像输入，输出相同图像，无需额外操作。而 rgb2gray 函数仅适用于颜色图像，若输入灰度图像则会引发错误。在处理灰度图像时，使用 im2gray 函数能够避免繁琐的判断和转换逻辑。若遇到需要将图像从颜色格式转换为灰度...
im2gray 函数与 rgb2gray 基本相同,不同之处是它可以接受灰度图像作为输入并原样返回它们。 如果输入图像是灰度图像,则 rgb2gray 函数返回错误。如果使用 im2gray 函数,就不再需要类似如下的循环代码。 if ndim…
Theim2grayfunction converts RGB values to grayscale values by forming a weighted sum of theR,G, andBcomponents: 0.298936021293775 * R + 0.587043074451121 * G + 0.114020904255103 * B The coefficients used to calculate grayscale values in theim2grayfunction are identical to those used to calculate ...
The im2gray function converts RGB values to grayscale values by forming a weighted sum of the R, G, and B components: 0.298936021293775 * R + 0.587043074451121 * G + 0.114020904255103 * B The coefficients used to calculate grayscale values in the im2gray function are identical to those used...
The im2gray function converts RGB values to grayscale values by forming a weighted sum of the R, G, and B components: 0.2989 * R + 0.5870 * G + 0.1140 * B These are the same weights used by the rgb2ntsc (Image Processing Toolbox) function to compute the Y component. The coefficie...
Answers (2) DGMon 8 Jun 2022 0 Link Edited:DGMon 8 Jun 2022 Open in MATLAB Online im2gray() was introduced in R2020b. You're using R2020a. Depending on what you need, you might be able to do it with rgb2gray() and some array size checks. ...
In the documentation: https://www.mathworks.com/help/matlab/ref/im2gray.html you find: Introduced in R2020b You find the applied algorithm in the documentation also: gs = 0.2989 * I(:, :, 1) + 0.5870 * I(:, :, 2) + 0.1140 * I(:, :, 3) 2 Comments Md. Mahadi ...