Filters Main Function in Image Processing

I want to applied this three filter to a gray level image.

After that i want to save this image with using this file names (imsobel, imlaplas) in same current file.

I tried this but i can't do this.

I need a main fucntion.

%img =imread('cameraman.tif');

%Sobel filters

%Sx=[-1 0 1; -2 0 2; -1 0 1]

%Sy=[-1 -2 -1; 0 0 0; 1 2 1]

%T1=imfilter(img, Sx)

%T2=imfilter(img, Sy)

%imshow(T1)

%imshow(T2)

%Laplacian filters

&H= [0, -1, 0; -1, 4, -1; 0, -1, 0];

&T=imfilter(img, H)

%imshow(T)

% "imagefiles" variable contails each file detail (e.g. filename, size, etc.)

imagefiles = dir(['C:\Users\metec\Desktop\aa\', '*.tif']);

% Count total number of files

nfiles = length(imagefiles);

% Display total number of the files

disp(['Total number of file: ', num2str(nfiles)])

% Define filter kernel

%Laplacian filters

H = [0, -1, 0; -1, 4, -1; 0, -1, 0];

T=imfilter(img, H)

%imshow(T)

for idx = 1:nfiles

T=imfilter(img, H)

% Display name of each file

disp(imagefiles(idx).name)

currentfilename = [imagefiles(idx).folder , '\', imagefiles(idx).name];

currentimage = imread(currentfilename);

% Apply filter to current image using convn

result = convn(currentimage, T, 'same');

% Save the filtered image

imwrite(uint8(result),...

['C:\Users\metec\Desktop\aa\', 'imgLaplas', imagefiles(idx).name, '.tif'])

end

Answer 1

[DGM]

At first I thought this was an issue of misusing uint8(), but no. This is just a collage of nonsense and dead code. Most of it can simply be deleted

% get filenames and paths
querypath = fullfile(matlabroot,'toolbox/images/imdata/car_*.jpg');
imagefiles = dir(querypath);

% define filter kernel
H = [0, -1, 0; -1, 4, -1; 0, -1, 0]; % laplacian

for idx = 1:numel(imagefiles)
    % construct full filename and read the image
    infname = fullfile(imagefiles(idx).folder,imagefiles(idx).name);
    inpict = imread(infname);
    
    % apply the filter
    outpict = imfilter(inpict,H,'symmetric');
    
    % save the dumb thing
    [~,basename] = fileparts(imagefiles(idx).name);
    outfname = sprintf('laplace_%s.png',basename);
    imwrite(outpict,outfname)
end