Can anyone please help me about histogram matching without using inbuilt functions like imhist? Because my system shows error for 'im' built-in functions.

3 次查看（过去 30 天）
Awani
Awani 2014-11-17
回答： Bhumi Shah 2020-2-11
Code using im functions is:
I1 = imread('image1.jpg'); I2 = imread('image2.png');
image1 = im2double(I1); % convert images to type double (range from from 0 to 1 instead of from 0 to 255) image2 = im2double(I2);
% Calculate the Normalized Histogram of Image 1 and Image 2 hn1 = imhist(image1)./numel(image1); hn2 = imhist(image2)./numel(image2);
subplot(2,2,1);plot(hn1); subplot(2,2,2);plot(hn2);
f = sum((hn1 - hn2).^2) % Calculate the histogram error
So can you please help me about replacing imhist function?

请先登录，再回答此问题。

回答（1 个）

Bhumi Shah
Bhumi Shah 2020-2-11
You can use histogram function with NumBins and BinLimits NV pair in place of imhist. Following steps might be helpful.
I1 = imread(image1);
I1double = im2double(I1);
I2 = imread(image2);
I2double = im2double(I2);
H1 = histogram(I1double, 'NumBins', 256, 'BinLimits', [0 1]);
H2 = histogram(I2double, 'NumBins', 256, 'BinLimits', [0 1]);
Count1 = H1.BinCounts'; 
Count2 = H2.BinCounts';
 
Refer to the following link for more information: 
https://www.mathworks.com/help/matlab/ref/matlab.graphics.chart.primitive.histogram.html (histogram)

类别

在 Help Center 和 File Exchange 中查找有关 Histograms 的更多信息

标签

产品


版本

R2014b

Community Treasure Hunt

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

Start Hunting!

Translated by