Matlab: Recognizing the Valid Range

Summary

代码识别影像有效数值区间，并显示有效数值之数量。

Code Specification

配置igValues忽略数值，输出有效数值数量及范围如Fig. 1。

Fig. 1

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% Created by LI Xu % Version 1.0 % December 2, 2015 % Description: % Recognize the valid range for the input image % If you have any question about this code, % please do not hesitate to contact me via E-mail: % jeremy456@163.com % Blog: % http://blog.sciencenet.cn/u/lixujeremy % http://lixuworld.blogspot.com/ clear; clc; % Values for Ingnoring igValues=[-99, 100]; % Source Directory SouDir='./input'; % All files files=dir([SouDir, '/*.tif']); % Loop for ii=1:length(files) filename=files(ii).name; filepath=[SouDir, '/', filename]; image=imread(filepath); data=image; imgsz=size(data); num=imgsz(1)*imgsz(2); data=reshape(data, 1, num); for jj=1:length(igValues) igV=igValues(jj); index=find(data==igV); if isempty(index) continue; end data(index)=[]; end % Max max_data=max(data); % Min min_data=min(data); % Display fprintf('%d-%s-%d: ', ii, filename, length(data)); fprintf('%.5f~%.5f\n', min_data, max_data); end disp('*********************************************');