MATLAB: How to remove everything except leaves
color imagehueimage processingImage Processing Toolboxleaf segmentationobject recognition
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Try this:
clc; % Clear command window.
clear; % Delete all variables.
close all; % Close all figure windows except those created by imtool.
workspace; % Make sure the workspace panel is showing.
fontSize = 20;rgbImage = imread('capture.png');subplot(2, 2, 1);imshow(rgbImage);axis on;title('Original Image', 'FontSize', fontSize);% Set up figure properties:
% Enlarge figure to full screen.
set(gcf, 'Units', 'Normalized', 'OuterPosition', [0, 0.05, 1, .95]);% Get rid of tool bar and pulldown menus that are along top of figure.
% set(gcf, 'Toolbar', 'none', 'Menu', 'none');
% Give a name to the title bar.
set(gcf, 'Name', 'Demo by ImageAnalyst', 'NumberTitle', 'Off') % NoseDetect = vision.CascadeObjectDetector('Nose','MergeThreshold',30);
% Convert to HSV color space.
HSV = rgb2hsv(rgbImage);subplot(2, 2, 2);imshow(HSV);title('HSV Image', 'FontSize', fontSize);hold onhueImage = HSV(:,:,1);satImage = HSV(:,:,2);valueImage = HSV(:,:,3);% Create circle perimeter coordinates.
% nbox = step(NoseDetect, I);
% nx = nbox(1) + nbox(3)/2;
% ny = nbox(2) + nbox(4)/2;
% final_x = nx - 120;
% final_y = ny - 20;
final_x = 270;final_y = 250;theta = 0 : 0.01 : 2*pi;radius = 35;X = radius * cos(theta) + final_x;Y = radius * sin(theta) + final_y;plot(X, Y, 'm-', 'LineWidth', 2);% Create circle mask
[rows, columns] = size(hueImage);mask = poly2mask(X, Y, rows, columns);subplot(2, 2, 3);imshow(mask);title('Mask Image', 'FontSize', fontSize);% Change HSV values within the mask only.
hueImage(mask) = 0.5; %hueImage(mask) + 1 / 360 * 400;
satImage(mask) = satImage(mask) + 0.01 * 4;valueImage(mask) = valueImage(mask) + 0.01 * 3;% Clip values.
hueImage(hueImage>1)=1; hueImage(hueImage<0)=0;satImage(satImage>1)=1; satImage(satImage<0)=0;valueImage(valueImage>1)=1; valueImage(valueImage<0)=0;% Reconstruct 3-D HSV image.
HSV(:,:,1) = hueImage;HSV(:,:,2) = satImage;HSV(:,:,3) = valueImage;% Convert back to RGB color space for display.
newRGBImage = hsv2rgb(HSV);subplot(2, 2, 4);imshow(newRGBImage);title('Altered Image', 'FontSize', fontSize);
Use bwconvhull().
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