How to display all the bounding boxes in the image?

Question

ezhil K 2019-2-7

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/443630-how-to-display-all-the-bounding-boxes-in-the-image

评论： ezhil K 2019-2-7

I am trying to segment all the characters using bounding boxes.I have drawn bounding boxes seperately.Now I need to display all the boxes seperately.I have written a cose,But,I get some error in it.How should I rectify it?

Error:

Undefined variable "blobMeasurements" or class "blobMeasurements".

Error in tes (line 63)

thisBlobsBoundingBox = blobMeasurements(k).BoundingBox; % Get list of pixels in current blob.

% clear all, close all, clc
%%read the image from the location
image = imread('test3.png');
%% show the input image
figure(1)
imshow(image);
title('Input Image');
%% convert the rgb image to gray scale image 
if size(image, 3) == 3
    image = rgb2gray(image);
end;
%% show the gray scale image 
% figure(2)
% imshow(image);
% title('Gray scale image');
%% conver to binary image
image=im2bw(image);
%% show the binary image 
% figure(3)
% imshow(image);
% title('Binary image');
%% remove the noise of the image ( remove less than 15px from the binary image)
image = bwareaopen(image,30);
figure,imshow(image);
%% show the noise removed image 
% figure(4)
% imshow(image);
% title('noise removed image');
%% edge detection of the image
imageEdge = edge(image);
imshow(imageEdge);
%COUNT LETTER IN TEXT
[Ilabel num]=bwlabel(imageEdge);
disp(num)
%CALCULATE REGION PROPERTIES
Iprops=regionprops(Ilabel);
%SET BOX PROPERTIES INTO VARIABLE
Ibox=[Iprops.BoundingBox];
%RESHAPE 1-D ARRAY
Ibox=reshape(Ibox,[4 num]);
%DRAW BOUNDING BOXES FOR EACH LETTER
for cnt=1:num
    rectangle('position',Ibox(:,cnt),'edgecolor','r');
end
hold off
figure;
  % Maximize the figure window.
  set(gcf, 'units','normalized','outerposition',[0 0 1 1]);
  for k = 1 : num           % Loop through all blobs.
    % Find the bounding box of each blob.
    thisBlobsBoundingBox = blobMeasurements(k).BoundingBox;  % Get list of pixels in current blob.
    % Extract out this coin into it's own image.
    subImage = imcrop(originalImage, thisBlobsBoundingBox);
  end