本文主要是介绍matlab 图片RGB颜色提取0-255版，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
APP designer版本链接：MATLAB App Designer 特别篇：RGB颜色提取器
新版本链接：matlab图片RGB颜色提取第二版
function getcolor255
global control;
global ima;
global GUI;
global x_limit;
global y_limit;
global color;
global a;
global color_number;
global color_list;
color_number=1;GUI.fig=figure('units','pixels',...'position',[350 100 800 500],...'Numbertitle','off',...'menubar','none',...'resize','off',...'name','getcolor',...'color',[0.95 0.95 0.95]);
GUI.text=uicontrol('parent',GUI.fig,...'style','text',...'string','色彩识别',...'horizontalalign','center',...'position',[50 440 400 30],...'backgroundcolor',[0.85 0.89 0.85],...'foregroundcolor','k',...'fontsize',15);
GUI.text1=uicontrol('parent',GUI.fig,...'style','text',...'string','',...'horizontalalign','left',...'position',[460 330 100 100],...'backgroundcolor',[1 1 1],...'foregroundcolor','k',...'fontsize',10);
GUI.text2=uicontrol('parent',GUI.fig,...'style','text',...'string','',...'horizontalalign','left',...'position',[350 440 210 30],...'backgroundcolor',[1 1 1],...'foregroundcolor','k',...'fontsize',10);
GUI.savecolorbutton=uicontrol('parent',GUI.fig,...'style','pushbutton',...'string','储存颜色',...'position',[460 290 100 30],...'backgroundcolor',[0.85 0.89 0.85],...'foregroundcolor','k',...'fontsize',15,...'callback',@save_color);GUI.deletedatabutton=uicontrol('parent',GUI.fig,...'style','pushbutton',...'string','清空数据',...'position',[460 230 100 30],...'backgroundcolor',[0.8 0.9 0.9],...'foregroundcolor','k',...'fontsize',15,...'callback',@clear_data);
GUI.deletepicbutton=uicontrol('parent',GUI.fig,...'style','pushbutton',...'string','删除图片',...'position',[460 180 100 30],...'backgroundcolor',[0.8 0.9 0.9],...'foregroundcolor','k',...'fontsize',15,...'callback',@delete_pic);
GUI.getcapbutton=uicontrol('parent',GUI.fig,...'style','pushbutton',...'string','屏幕截图',...'position',[460 130 100 30],...'backgroundcolor',[0.8 0.9 0.9],...'foregroundcolor','k',...'fontsize',15,...'callback',@get_capture);
GUI.getpicbutton=uicontrol('parent',GUI.fig,...'style','pushbutton',...'string','读取图片',...'position',[460 80 100 30],...'backgroundcolor',[0.8 0.9 0.9],...'foregroundcolor','k',...'fontsize',15,...'callback',@getImage);
GUI.getcolorbutton=uicontrol('parent',GUI.fig,...'style','pushbutton',...'tag','recc',...'string','获取颜色',...'position',[460 30 100 30],...'backgroundcolor',[0.8 0.9 0.9],...'foregroundcolor','k',...'fontsize',15,...'callback',@get_color);for i=1:9GUI.text=uicontrol('parent',GUI.fig,...'tag',num2str(i),...'style','text',...'string','',...'horizontalalign','left',...'position',[600 440-40*(i-1) 30 30],...'backgroundcolor',[1 1 1],...'foregroundcolor','k',...'fontsize',10);
endfor i=1:9GUI.text=uicontrol('parent',GUI.fig,...'tag',[num2str(i),'t'],...'style','text',...'string','',...'horizontalalign','center',...'position',[640 440-40*(i-1) 150 30],...'backgroundcolor',[1 1 1],...'foregroundcolor','k',...'fontsize',8);
end
GUI.inputbutton=uicontrol('parent',GUI.fig,...'style','pushbutton',...'string','清除最后一个颜色',...'position',[600 80 190 30],...'backgroundcolor',[0.85 0.89 0.85],...'foregroundcolor','k',...'fontsize',15,...'callback',@delete_last);
GUI.inputbutton=uicontrol('parent',GUI.fig,...'style','pushbutton',...'string','导出数据',...'position',[600 30 190 30],...'backgroundcolor',[0.85 0.89 0.85],...'foregroundcolor','k',...'fontsize',15,...'callback',@output_data);GUI.axes=axes('Units','pixels',...'PlotBoxAspectRatio',[1 1 1],...'Position',[50 30 400 400],...'Color',[0.98 0.98 0.98],...'Box','on', ...'XLim',[0 500],...'YLim',[0 500], ...'XColor','w','YColor','w',...'YDir','reverse', ...'Tag','sokoduaxes',...'xtick',[],'ytick',[]);
hold on;function output_data(~,~)if color_number>1disp(color_list)endendfunction save_color(~,~)if (~isempty(get(GUI.text2,'string')))&&color_number<10set(findobj('tag',num2str(color_number)),'backgroundcolor',color/255)set(findobj('tag',[num2str(color_number),'t']),'string',['[',num2str(color),']'])color_list(color_number,:)=color;color_number=color_number+1;endendfunction delete_last(~,~)if color_number>1set(findobj('tag',num2str(color_number-1)),'backgroundcolor',[1 1 1])set(findobj('tag',[num2str(color_number-1),'t']),'string','')color_list(end,:)=[];color_number=color_number-1;endendfunction delete_pic(~,~)control=0;set(findobj('Tag','sokoduaxes'),...'XLim',[0 500],...'YLim',[0 500],...'Position',[50 30 400 400],...'Color',[0.98 0.98 0.98]);delete(a);endfunction clear_data(~,~)control=0;set(GUI.text1,'backgroundcolor',[1 1 1]);set(GUI.text2,'string','');set(findobj('Tag','sokoduaxes'),...'XLim',[0 500],...'YLim',[0 500],...'Position',[50 30 400 400],...'Color',[0.98 0.98 0.98]);set(findobj('tag','recc'),'string','获取颜色');delete(a);endfunction get_color(~,~)if control==0set(GUI.text1,'backgroundcolor',[1 1 1]);set(GUI.text2,'string',''); endcontrol=1;set(gcf,'WindowButtonMotionFcn',@whilemovefcn) set(gcf,'WindowButtonDownFcn',@whileclickfcn)endfunction whilemovefcn(~,~)xy=get(gca,'CurrentPoint');x=xy(1,2);y=xy(1,1);if x<=x_limit&&y<=y_limit&&x>=0&&y>=0x(x>x_limit)=x_limit;y(y>y_limit)=y_limit;x(x<1)=1;y(y<1)=1;x=round(x);y=round(y);if control==1color=double([ima(x,y,1),ima(x,y,2),ima(x,y,3)]);set(GUI.text1,'backgroundcolor',color/255);set(GUI.text2,'string',['[',num2str(color),']']);endelseif control==1set(GUI.text1,'backgroundcolor',[1 1 1]);set(GUI.text2,'string',''); endendendfunction whileclickfcn(~,~) xy=get(gca,'CurrentPoint');x=xy(1,2);y=xy(1,1);if x<=x_limit&&y<=y_limit&&x>=0&&y>=0control=0;set(GUI.text1,'backgroundcolor',color/255);set(GUI.text2,'string',['[',num2str(color),']']);set(findobj('tag','recc'),'string','继续取色');%disp(color/255)endendfunction get_capture(~,~)screensize=get(0,'screensize');screensize=1.5*screensize;robot=java.awt.Robot();rectangle=java.awt.Rectangle();rectangle.x=0;rectangle.y=0;rectangle.width=screensize(3);rectangle.height=screensize(4);image=robot.createScreenCapture(rectangle);data=image.getData(); temp=zeros(screensize(3)*screensize(4)*3,1);temp=data.getPixels(0,0,screensize(3),screensize(4),temp); temp=uint8(temp);R=temp(1:3:end); G=temp(2:3:end); B=temp(3:3:end);R=reshape(R,[screensize(3),screensize(4)]); G=reshape(G,[screensize(3),screensize(4)]); B=reshape(B,[screensize(3),screensize(4)]);R=R';G=G';B=B';x_limit=screensize(4); y_limit=screensize(3);leng=max([x_limit,y_limit]);set(findobj('Tag','sokoduaxes'),...'XLim',[0 leng],...'YLim',[0 leng]);ima=cat(3,R,G,B);delete(a);a=imshow(ima);endfunction getImage(~,~)warning off;[filename, pathname] = uigetfile({'*.jpg;*.tif;*.png;*.gif','All Image Files';...'*.*','All Files' });ima = imread([ pathname,filename]);[x,y,~]=size(ima);x_limit=x;y_limit=y;leng=max([x_limit,y_limit]);set(findobj('Tag','sokoduaxes'),...'XLim',[0 leng],...'YLim',[0 leng]);delete(a);a=imshow(ima);endend
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