Index in position 2 exceeds array bounds (must not exceed 1)

Can anyone help me with index in position 2 exceeds array bounds (must not exceed 1). in line 39. My project is offside detection in football but i don't even know what offside exactly is i don't know is my code gonna work properly :( im stuck

clc
close all
clear all

img=imread('offside.jpg');
img=imcrop(img,[5 2 725 584]);
imtool('offside.jpg')
figure(1), imshow(img);
title('defender');
img_h=rgb2hsv(img);
h=img_h(:,:,1);
s=img_h(:,:,2);
v=img_h(:,:,3);

level=graythresh(img);

[r c]=size(h);

for i=1:r
    for j=1:c
        if (h(i,j)>=0.01 && h(i,j)<=0.99)
            out(i,j)=255;
        else
            out(i,j)=0;
        end
    end
end

t=bwareaopen(out,300);
    se=strel('disk',0);
    bw=imclose(t,se);
    
    [B,L]= bwboundaries(bw,'noholes'),disp(B);
    hold on
 

for k = 1:length(B)
    boundary=B(k);
    plot(boundary(:,2), boundary(:,1), 'w', 'LineWidth',2)
end

fprintf('Nesneler isaretlenmistir. Toplam nesne sayisi=%d\n', length(B))
stats=regionprops(L,'Area','Centroid');
figure(2), imshow(img);


[x,y]=find(imcomplement(bw)==0);

img1=imread('offside.jpg');
img1=imcrop(img1,[5 2 745 594]);
figure(3), imshow(img1);title('attacker');

img1_h1=rgb2hsv(img1);
h1=img1_h1(:,:,1);
s1=img1_h1(:,:,2);
v1=img1_h1(:,:,3);


level1=graythresh(img1);

[r c]=size(h1);

for i=1:r
    for j=1:c
        if s1(i,j)>=0.17 && s1(i,j)<=0.23
            out1(i,j)=255;
        else
            out1(i,j)=0;
        end
    end
end
%figure, imshow(out)
t1=bwareaopen(out1,200)
    %figure, imshow(t)
    se=strel('disk',0);
    bw1=imclose(t1,se);
    
    [B,L]=bwboundaries(bw1,'noholes'),disp(B);
    hold on

for k=1:length(B)
    boundary1=B(k);
    plot(boundary1(:,2), boundary1(:,1), 'w', 'LineWidtyh',2)
end

fprintf('nesneler isaretlenmistir. Toplam nesne sayisi=%d\n',length(B));

stats=regionprops(L,'Area','Centroid');

%for k=1:length(B) % nesneleri sayan loopun baslangici


[x1,y1]=find(imcomplement(bw1)==0)
d=min(x)+357;
d1=min(x1)+9;
a=(d-d1);

if(a>0)
    for j=d
        for i=105:405
            img(i,j)=255;
        end
    end
    figure,imshow(img);title('offside');
else
    for j=d1
        for i=1:20
            img(i,j)=255;
        end
    end
    figure,imshow(img);title('not offside');
end

[KSSV]

We cannot rectify error unless the required input is given.

Any ways check this variable boundary, it seems it don't have two columns.

Answer 1

[yanqi liu]

yes，sir，may be upload 'offside.jpg' to debug

may be check the 39 line，is it two columns matrix

[Walter Roberson]

The first output of bwboundaries is a cell array.

 boundary1=B(k);

applied to a cell array is going to result in a scalar cell -- which is not going to have two columns.

At that point you need the data inside the cell array, B{k}

Answer 2

[Walter Roberson]

boundary1=B(k);

should be

boundary1 = B{k};