使用滑塊在matlab中的圖像堆棧顯示

Question

我有一個3維矩陣的數據（一維的圖像堆棧，例如時間 我想顯示一個圖像，並有一個下面的滑塊瀏覽圖像

我寫了一段可以工作的代碼，但它很笨重，有點醜陋我認爲...我想寫一個乾淨的函數，所以我想知道是否有人知道更清潔，更好的方法來做。它

這裏是我的代碼：

interv = [min max]; % interval for image visualization 

imagesc(Temps_visu,X*100,squeeze(X,Y,MyMatrix(:,:,1)),interv); 

title('My Title'); 
xlabel('X (cm)'); 
ylabel('Y (cm)'); 

pos = get(gca,'position'); 
% slider position 
Newpos = [pos(1) pos(2)-0.1 pos(3) 0.05]; 

pp = 1; 
% callback slider 
S = ['pp=floor(get(gcbo,''value''));imagesc(Temps_visu,X*100,squeeze(X,Y,MyMatrix(:,:,1)),interv));' ... 
    'set_axes_elasto;title(''My Title'');disp(pp);']; 

Mz = size(MyMatrix,3); 

% Creating Uicontrol 
h = uicontrol('style','slider',... 
    'units','normalized',... 
    'position',Newpos,... 
    'callback',S,... 
    'min',1,'max',Mz,... 
    'value',pp,... 
    'sliderstep',[1/(Mz-1) 10/(Mz-1)]); 

Answer 1

她e是一種使用偵聽器對象來實現它的方法，可以平滑地顯示堆棧。我使用同一圖像的灰度變化（即只有4幀）組成了一個虛擬棧，但原理對於您的應用程序來說是相同的。請注意，我使用imshow來顯示圖像，但使用imagesc時不會引起任何問題。

該代碼被評論，所以希望這是足夠清晰的。如果不是，請不要猶豫，尋求幫助！

代碼：

function SliderDemo 
clc 
clear all 

NumFrames = 4; %// Check below for dummy 4D matrix/image sequence 
hFig = figure('Position',[100 100 500 500],'Units','normalized'); 

handles.axes1 = axes('Units','normalized','Position',[.2 .2 .6 .6]); 

%// Create slider and listener object for smooth visualization 
handles.SliderFrame = uicontrol('Style','slider','Position',[60 20 400 50],'Min',1,'Max',NumFrames,'Value',1,'SliderStep',[1/NumFrames 2/NumFrames],'Callback',@XSliderCallback); 
handles.SliderxListener = addlistener(handles.SliderFrame,'Value','PostSet',@(s,e) XListenerCallBack); 

handles.Text1 = uicontrol('Style','Text','Position',[180 420 60 30],'String','Current frame'); 
handles.Edit1 = uicontrol('Style','Edit','Position',[250 420 100 30],'String','1'); 

%// Create dummy image sequence, here 4D sequence of grayscale images. 
MyImage = imread('peppers.png'); 

MyMatrix = cat(4,rgb2gray(MyImage),MyImage(:,:,1),MyImage(:,:,2),MyImage(:,:,3)); 

%// Use setappdata to store the image stack and in callbacks, use getappdata to retrieve it and use it. Check the docs for the calling syntax. 

setappdata(hFig,'MyMatrix',MyMatrix); %// You could use %//setappdata(0,'MyMatrix',MyMatrix) to store in the base workspace. 

%// Display 1st frame 
imshow(MyMatrix(:,:,:,1)) 

%// IMPORTANT. Update handles structure. 
guidata(hFig,handles); 

%// Listener callback, executed when you drag the slider. 

    function XListenerCallBack 

     %// Retrieve handles structure. Used to let MATLAB recognize the 
     %// edit box, slider and all UI components. 
     handles = guidata(gcf); 

%// Here retrieve MyMatrix using getappdata. 
MyMatrix = getappdata(hFig,'MyMatrix'); 

     %// Get current frame 
     CurrentFrame = round((get(handles.SliderFrame,'Value'))); 
     set(handles.Edit1,'String',num2str(CurrentFrame)); 

     %// Display appropriate frame. 
     imshow(MyMatrix(:,:,:,CurrentFrame),'Parent',handles.axes1); 

     guidata(hFig,handles); 
    end 


%// Slider callback; executed when the slider is release or you press 
%// the arrows. 
    function XSliderCallback(~,~) 

     handles = guidata(gcf); 

%// Here retrieve MyMatrix using getappdata. 
    MyMatrix = getappdata(hFig,'MyMatrix'); 

     CurrentFrame = round((get(handles.SliderFrame,'Value'))); 
     set(handles.Edit1,'String',num2str(CurrentFrame)); 

     imshow(MyMatrix(:,:,:,CurrentFrame),'Parent',handles.axes1); 

     guidata(hFig,handles); 
    end 

end 

這個數字看起來是這樣的：

希望幫助！