matlab窗口技术ct图像

matlab窗口技术ct图像MATLABCT图像窗口查看器V1functionct_viewer(ct_data)%CT_VIEWERCT图像窗口查看器%用法:ct_viewer(ct_data)%其中ct_data是一个三维数组，表示一系列CT切片%检查输入参数ifnargin<1%如果没有提供数据，使用示例数据loadmri;ct_data=double(D);end%获取图像尺寸和切片数量[rows,cols,num_slices]=size(ct_data);%创建主窗口fig=figure('Name','CT图像窗口查看器',...'Position',[100,100,800,600],...'NumberTitle','off',...'MenuBar','none',...'ToolBar','none');%创建图像显示区域axes_handle=axes('Parent',fig,...'Position',[0.1,0.2,0.8,0.7]);%初始化当前切片current_slice=floor(num_slices/2);%计算HU值范围hu_min=min(ct_data(:));hu_max=max(ct_data(:));%初始化窗口级别和宽度window_level=(hu_min+hu_max)/2;window_width=hu_max-hu_min;%显示初始切片image_handle=imshow(apply_window_level(ct_data(:,:,current_slice),window_level,window_width),...'Parent',axes_handle);axisequaltight;%添加切片导航控件uicontrol('Style','slider',...'Parent',fig,...'Position',[0.1,0.1,0.8,0.05],...'Min',1,'Max',num_slices,'Value',current_slice,...'SliderStep',[1/num_slices,10/num_slices],...'Callback',@(src,event)update_slice(src,event,ct_data,image_handle,axes_handle));%添加窗口级别控件uicontrol('Style','edit',...'Parent',fig,...'Position',[0.2,0.02,0.1,0.05],...'String',num2str(window_level),...'Callback',@(src,event)update_window_level(src,event,ct_data,image_handle,current_slice));uicontrol('Style','text',...'Parent',fig,...'Position',[0.15,0.02,0.05,0.05],...'String','窗位:');uicontrol('Style','edit',...'Parent',fig,...'Position',[0.55,0.02,0.1,0.05],...'String',num2str(window_width),...'Callback',@(src,event)update_window_width(src,event,ct_data,image_handle,current_slice));uicontrol('Style','text',...'Parent',fig,...'Position',[0.5,0.02,0.05,0.05],...'String','窗宽:');%添加快捷键说明uicontrol('Style','text',...'Parent',fig,...'Position',[0.75,0.02,0.2,0.05],...'String','上/下:切片;左/右:窗宽;+/-:窗位',...'HorizontalAlignment','right');%显示当前切片信息slice_info=uicontrol('Style','text',...'Parent',fig,...'Position',[0.1,0.92,0.8,0.05],...'String',['切片:',num2str(current_slice),'/',num2str(num_slices)],...'HorizontalAlignment','center');%设置鼠标交互set(fig,'WindowButtonDownFcn',@(src,event)mouse_down(src,event,ct_data,image_handle,current_slice,axes_handle));set(fig,'WindowButtonMotionFcn',@(src,event)mouse_move(src,event,ct_data,image_handle,current_slice,axes_handle));set(fig,'WindowButtonUpFcn',@(src,event)mouse_up(src,event,ct_data,image_handle,current_slice,axes_handle));set(fig,'KeyPressFcn',@(src,event)key_press(src,event,ct_data,image_handle,current_slice,axes_handle,slice_info,num_slices));%窗口级别应用函数functionwindowed_image=apply_window_level(image_data,level,width)%计算窗口的上下限lower=level-width/2;upper=level+width/2;%应用窗口级别windowed_image=(image_data-lower)/width;windowed_image=max(min(windowed_image,1),0);end%切片更新回调函数functionupdate_slice(src,event,ct_data,image_handle,axes_handle)current_slice=round(get(src,'Value'));set(image_handle,'CData',ct_data(:,:,current_slice));drawnow;end%窗位更新回调函数functionupdate_window_level(src,event,ct_data,image_handle,current_slice)trynew_level=str2double(get(src,'String'));if~isnan(new_level)%获取当前窗宽window_width=str2double(get(findobj(fig,'String',num2str(window_width)),'String'));%应用新的窗口级别set(image_handle,'CData',apply_window_level(ct_data(:,:,current_slice),new_level,window_width));drawnow;endcatch%如果转换失败，恢复原来的值set(src,'String',num2str(window_level));endend%窗宽更新回调函数functionupdate_window_width(src,event,ct_data,image_handle,current_slice)trynew_width=str2double(get(src,'String'));if~isnan(new_width)&&new_width>0%获取当前窗位window_level=str2double(get(findobj(fig,'String',num2str(window_level)),'String'));%应用新的窗口宽度set(image_handle,'CData',apply_window_level(ct_data(:,:,current_slice),window_level,new_width));drawnow;endcatch%如果转换失败，恢复原来的值set(src,'String',num2str(window_width));endend%鼠标按下回调函数functionmouse_down(src,event,ct_data,image_handle,current_slice,axes_handle)%记录鼠标按下位置，用于平移和缩放%此处可添加代码实现平移和缩放功能end%鼠标移动回调函数functionmouse_move(src,event,ct_data,image_handle,current_slice,axes_handle)%处理鼠标移动事件，用于平移和缩放%此处可添加代码实现平移和缩放功能end%鼠标释放回调函数functionmouse_up(src,event,ct_data,image_handle,current_slice,axes_handle)%处理鼠标释放事件%此处可添加代码实现平移和缩放功能end%键盘按下回调函数functionkey_press(src,event,ct_data,image_handle,current_slice,axes_handle,slice_info,num_slices)key=get(src,'CurrentKey');window_level=str2double(get(findobj(fig,'String',num2str(window_level)),'String'));window_width=str2double(get(findobj(fig,'String',num2str(window_width)),'String'));switchkeycase'uparrow'%上一张切片ifcurrent_slice<num_slicescurrent_slice=current_slice+1;set(findobj(fig,'Style','slider'),'Value',current_slice);set(image_handle,'CData',ct_data(:,:,current_slice));set(slice_info,'String',['切片:',num2str(current_slice),'/',num2str(num_slices)]);drawnow;endcase'downarrow'%下一张切片ifcurrent_slice>1current_slice=current_slice-1;set(findobj(fig,'Style','slider'),'Value',current_slice);set(image_handle,'CData',ct_data(:,:,current_slice));set(slice_info,'String',['切片:',num2str(current_slice),'/',num2str(num_slices)]);drawnow;endcase'rightarrow'%增加窗宽window_width=window_width+10;set(findobj(fig,'String',num2str(window_width-10)),'String',num2str(window_width));set(image_handle,'CData',apply_window_level(ct_data(:,:,current_slice),window_level,window_width));drawnow;case'leftarrow'%减少窗宽ifwindow_width>10window_width=window_width-10;set(findobj(fig,'String',num2str(window_width+10)),'String',num2str(window_width));set(image_handle,'CData',apply_window_level(ct_data(:,:,current_slice),window_level,window_width));drawnow;