I want to change the brightness and contrast with slider bar.
i made button callback function that read the sagittal direction of 256 dicom files and then print coronal, axial, sagittal mri 2d image through axes,
i do the brightness first, but it didnt work and keep erroring.
here is slider bar's callback function:
function SliderValueChanged(app, event)
% take slider value
sliderValue = app.UIKnob.Value;
% change brightness
brightnessAdjusted = imadjust(app.images, [sliderValue/100, 1], []);
% update sagittal mri image
app.UIAxes_2.Visible = 'off';
img2 = imagesc(squeeze(brightnessAdjusted(:, 128, :)), 'Parent', app.UIAxes_2);
colormap(app.UIAxes_2, 'gray');
title(app.UIAxes_2, 'Sagittal');
axis(app.UIAxes_2, 'image');
% update axial mri image
app.UIAxes_1.Visible = 'off';
img1 = imagesc(squeeze(brightnessAdjusted(128, :, :)), 'Parent', app.UIAxes_1);
colormap(app.UIAxes_1, 'gray');
title(app.UIAxes_1, 'Axial');
axis(app.UIAxes_1, 'image');
% update coronal mri image
app.UIAxes_3.Visible = 'off';
img3 = imagesc(squeeze(brightnessAdjusted(:, :, 128)), 'Parent', app.UIAxes_3);
colormap(app.UIAxes_3, 'gray');
title(app.UIAxes_3, 'Coronal');
axis(app.UIAxes_3, 'image');
end
