Because I have made a similar app before, so the functions on my app this time are only implemented on the grayscale image, and cannot be superimposed. If you want to display the superimposed effect of all functions, you can use a global variable after each operation. The converted image can be saved;
Edge extraction part:
function sureButtonPushed(app, event)
app.bianyuan=app.ListBox.Value;
size1=size(app.picture);
if numel(size1)>2
app.picture=rgb2gray(app.picture);
end
switch app.bianyuan
case 'Roberts'
[J, thresh] = edge(app.picture, 'Roberts', 30/255);
imshow(J,'Parent',app.UIAxes2);
case 'Canny'
[J, thresh] = edge(app.picture, 'canny');
imshow(J,'Parent',app.UIAxes2);
case 'LOG'
[J, thresh] = edge(app.picture, 'log');
imshow(J,'Parent',app.UIAxes2);
case 'Prewit'
[J, thresh] = edge(app.picture, 'prewitt');
imshow(J,'Parent',app.UIAxes2);
case 'Sobel'
[J, thresh] = edge(app.picture, 'sobel');
imshow(J,'Parent',app.UIAxes2);
end
endContrast section:
function SliderValueChanging(app, event)
changingValue = event.Value;
changingValue=changingValue./100;
size1=size(app.picture);
if numel(size1)>2
app.picture=rgb2gray(app.picture);
end
if changingValue<0.5
duibi=imadjust(app.picture,[changingValue,1-changingValue],[]);
imshow(duibi,'Parent',app.UIAxes2);
else
changingValue=0;
duibi=imadjust(app.picture,[changingValue,1-changingValue],[]);
imshow(duibi,'Parent',app.UIAxes2);
end
endHistogram equalization part:
function ButtonGroupSelectionChanged(app, event)
selectedButton = app.ButtonGroup.SelectedObject;
size1=size(app.picture);
if numel(size1)>2
app.picture=rgb2gray(app.picture);
end
switch selectedButton.Text
case '是'
zhifang=histeq(app.picture);
imshow(zhifang,'Parent',app.UIAxes2);
case '否'
imshow(app.picture,'Parent',app.UIAxes2);
return;
end
endAmbiguity part:
function Spinner_2ValueChanged(app, event)
value = app.Spinner_2.Value;
size1=size(app.picture);
if numel(size1)>2
app.picture=rgb2gray(app.picture);
end
way=fspecial('motion',value,value);
picture2=imfilter(app.picture,way);
imshow(picture2,'Parent',app.UIAxes2);
endSharpening part:
function SpinnerValueChanged(app, event)
value = app.Spinner.Value;
value=value./100;
size1=size(app.picture);
if numel(size1)>2
app.picture=rgb2gray(app.picture);
end
way=fspecial('sobel');
picture3=imfilter(app.picture,way);
picture3=app.picture+uint8(picture3)*value;
imshow(picture3,'Parent',app.UIAxes2);
endBrightness section:
function Spinner_3ValueChanged(app, event)
value = app.Spinner_3.Value;
size1=size(app.picture);
if numel(size1)>2
app.picture=rgb2gray(app.picture);
end
picture4=imadd(app.picture,value);
imshow(picture4,'Parent',app.UIAxes2);
endImage segmentation part:
function sureButton_2Pushed(app, event)
chance=app.ListBox_2.Value;
size1=size(app.picture);
if(numel(size1)>2)
app.picture=rgb2gray(app.picture);
end
switch chance
case 'Otsu'
M=graythresh(app.picture);
I=im2bw(app.picture,M);
imshow(I,'Parent',app.UIAxes2);
case '迭代阈值分割'
I=im2double(app.picture);
S=0.1;
S1=(max(I(:))+min(I(:)))/2;
r1=find(I>S1);
r2=find(I<=S1);
S2=(mean(I(r1))+mean(I(r2)))/2;
while abs(S2-S1)>S
S1=S2;
r1=find(I>S1);
r2=find(I<=S1);
S2=(mean(I(r1))+mean(I(r2)))/2;
end
I=im2bw(I,S2);
imshow(I,'Parent',app.UIAxes2);
case '区域生长法'
imshow(app.picture,'Parent',app.UIAxes2);
I=im2double(app.picture);
[M,N]=size(I);
[y,x]=getpts(app.UIAxes2);
x1=round(x);
y1=round(y);
seed=I(x1,y1);
grow1=zeros(M,N);%要绘制二值图，就可以先设置为0数组
grow1(x1,y1)=1;%种子点设为1，满足条件的点在后续判断中也会设为一
growcount=1; %待处理点个数
threshold=0.15;%与isinteger相互结合起来理解，如果没有isinteger，该值应该变得很大
while growcount>0
growcount=0;
for i=1:M %让种子去融合图片中满足的所有点
for j=1:N
if grow1(i,j)==1 %点在"栈"内，即一开始先检测到种子点，然后根据判断条件去判断种子点邻域的点是否满足条件，若满足为1，然后进行下一轮循环进行判断，直到循环时没有点可以满足添加进行融合了
if (i-1)>0&(i+1)<M&(j-1)>0&(j+1)<N %确保可以将8邻域完全放置
for u=-1:1 %8邻域生长
for v=-1:1
if (grow1(i+u,j+v)==0&abs(I(i+u,j+v)-seed)<=threshold)%只有在点为0的时候才进行，否则gowtcount会计算错误
grow1(i+u,j+v)=1;%种子合并其他点，只要满足条件的点都会和种子点一样置1
growcount=growcount+1; %记录此次新生长的点个数
end
end
end
end
end
end
end
end
imshow(grow1,'Parent',app.UIAxes2);
case '分水岭分割'
way=strel('disk',10);
I=app.picture;
tidu=imgradient(I);
fs=imerode(I,way);
fscj=imreconstruct(fs,I);
pz=imdilate(fscj,way);
pzcj=imcomplement(imreconstruct(imcomplement(pz),imcomplement(fscj)));
dgm=imregionalmax(pzcj);
I2=labeloverlay(I,dgm);
se2 = strel(ones(5,5));
fgm2 = imclose(dgm,se2);
fgm3 = imerode(dgm,se2);
fgm4=bwareaopen(fgm3,15);
I(fgm4)=255;
bw1=imbinarize(pzcj);
D = bwdist(bw1);
DL = watershed(D);
bgm = DL == 0;
gmag2 = imimposemin(tidu, bgm|fgm4);
L=watershed(gmag2);
labels = imdilate(L==0,ones(3,3)) + 2*bgm + 3*fgm4;
I4 = labeloverlay(I,labels);
imshow(I4,'Parent',app.UIAxes2);
end
endopen：
function openButtonPushed(app, event)
[filename,pathname]=uigetfile('*.jpg','picture');
if isequal(pathname,'')
msgbox('没有选中图片','nn','warn');
else
app.name=strcat(pathname,filename);
app.EditField.Value=app.name;
app.picture=imread(app.name);
imshow(app.picture,'Parent',app.UIAxes);
end
endlevelangle：
function levelangleKnob_2ValueChanging(app, event)
changingValue = event.Value;
size1=size(app.picture);
if numel(size1)>2
app.picture=rgb2gray(app.picture);
end
picture6=imrotate(app.picture,changingValue);
imshow(picture6,'Parent',app.UIAxes2);
endmirror：
function mirrorKnobValueChanged(app, event)
value = app.mirrorKnob.Value;
size1=size(app.picture);
if numel(size1)>2
app.picture=rgb2gray(app.picture);
end
switch value
case 'x镜面'
picture7=flip(app.picture,1);
case 'y镜面'
picture7=flip(app.picture,2);
end
imshow(picture7,'Parent',app.UIAxes2);
endGrayscale image:
function Button_6Pushed(app, event)
app.picture=rgb2gray(app.picture);
imshow(app.picture,'Parent',app.UIAxes2);
end
screenshot:
function Button_5Pushed(app, event)
savepicture=figure('Visible','on');
copyobj(app.UIAxes2,savepicture);
set(gca,'Units','normalized','Position',[0 0 1 1]);
for i=1:1:2
[x,y]=getpts;
if(i==1)
app.cut1=x;
app.cut2=y;
else
app.cut3=x;
app.cut4=y;
end
end
% msgbox(string(app.cut1));
% msgbox(string(abs(app.cut1-app.cut3)));
% msgbox(string(abs(app.cut4-app.cut2)));
% msgbox(string(app.cut2));
% msgbox(string(app.cut3));
% msgbox(string(app.cut4));
% [m,n]=size(app.picture);
% m=floor(m./2);
% n=floor(n./2);
% k=findall(gcf,'type','line')
% x=get(k,'xdata');
% y=get(k,'ydata');
% x=cell2mat(x);
% y=cell2mat(y);
saveas(savepicture,'1.jpg');
% n=imcrop(savepicture,[app.cut1,app.cut2,app.cut3,app.cut4]);
% imwrite(k(x(app.cut1:app.cut3),y(app.cut2:app.cut4)),'1.jpg');
imwrite(app.picture(app.cut1:app.cut3,app.cut2:app.cut4),'0.jpg');
end
keep:
function saveButtonPushed(app, event)
savepicture=figure('Visible','off');
copyobj(app.UIAxes2,savepicture);
set(gca,'Units','normalized','Position',[0.2 0.2 0.8 0.8]);
saveas(savepicture,'nb.jpg');
end