Hi, I am trying to put annotate my object in an image but I am having errors.

I am trying to put a rectangle on the object that is being classified. I am using insertObjectAnnotation however I am receiving some errors. My code is as followed:

            clear
            net = googlenet;   % Load the neural net
            net.Layers

            % while true   
                labelType ='' 
                [file,path]=uigetfile({'*.jpg;*.jpeg;*.bmp;*.png;*.tif'},'Choose an image');
                s=[path,file];
                I=imread(s);
            %     I = imread('car1.jpeg');
                sz = net.Layers(1).InputSize ;
                inputSize = net.Layers(1).InputSize
                size(I)
                I = imresize(I,inputSize(1:2));
                imshow(I)
                hold on

                movegui(imshow(I),[500,490]);
                [label, score] = classify(net, I);        % Classify the picture
        %         label = classify(net, I);        % Classify the picture
                 if (label == 'convertible')
                      labelType = 'Vehicle Recognised'
                 elseif (label == 'moped')
                      labelType = 'Vehicle Recognised'
                 elseif (label == 'tank')
                      labelType = 'Vehicle Recognised'
                 elseif (label == 'sports car')
                      labelType = 'Vehicle Recognised'
                 elseif (label == 'moving van')
                      labelType = 'Vehicle Recognised'
                 elseif (label == 'trailer truck')
                      labelType = 'Vehicle Recognised'          
                 elseif (label == 'garbage truck')
                      labelType = 'Vehicle Recognised'
                 elseif (label == 'trailer truck')
                      labelType = 'Vehicle Recognised'
                 elseif (label == 'minivan')
                       labelType = 'Vehicle Recognised'
                 elseif (label == 'beach wagon')
                       labelType = 'Vehicle Recognised'
                 elseif (label == 'ambulance')
                       labelType = 'Vehicle Recognised'
                 elseif (label =='cab')
                     labelType = 'Vehicle recognised';
                 else
                       labelType = 'No Vehicle Recognised'
                 end      

             label_str = cell(3,1);
            conf_val = [85.212 98.76 78.342];
            for ii=1:3
                label_str{ii} = ['Confidence: ' num2str(conf_val(ii),'%0.2f') '%'];
            end
            position = [23 373 60 66;35 185 77 81;77 107 59 26];
             PositionWhereRectangleShouldBe = [100 100 50 50];
             I = insertObjectAnnotation(I, 'rectangle', PositionWhereRectangleShouldBe, label_str, score);
             figure
             imshow(I);

        %         imshow(I);     % Show the picture
        %         message = strcat(labelType,'-', char(label)) 
                title({char(message),num2str((score),3)}); % Show the label
                 title(char(message)); % Show the label 
                I=imread(s);
                BW = im2bw(I,0.2); 
                se = strel('rectangle', [2 20]); 
                BW_opened = imclose(BW,se); 
        %         figure, imshow(BW_opened,[]) 
                s=regionprops(BW_opened,'Area','BoundingBox'); 
                [hh,ii] = sort([s.Area],'descend'); 
                out = imcrop(I,s(ii(2)).BoundingBox); 
                figure,imshow(out); 
                movegui(imshow(out),[300,400]);
                out_path = 'C:\Users\Student\Desktop\Vehicle number plate recognition\test images'; % Give path here
                fullFileName = fullfile(out_path, 'test_image.jpg');
                imwrite(out, fullFileName);

                load imgfildata;
                picture=imread(fullFileName);
                [~,cc]=size(picture);
                picture=imresize(picture,[300 500]);

                if size(picture,3)==3
                  picture=rgb2gray(picture);
                end
                se=strel('rectangle',[5,5]);
                a=imerode(picture,se);
                figure,imshow(a);
                 movegui(imshow(a),[800,350]);
                b=imdilate(a,se);
                threshold = graythresh(picture);
                picture =~im2bw(picture,threshold);
                percentageBlack = (1-nnz(picture)/numel(picture))*100
                picture = bwareaopen(picture,50);
                if (percentageBlack < 50)
                    picture = imcomplement(picture);
                end 
                [L,Ne]=bwlabel(picture);
                 propied=regionprops(L,'BoundingBox');
                hold on
                pause(1)
                for n=1:size(propied,1)
                  rectangle('Position',propied(n).BoundingBox,'EdgeColor','g','LineWidth',1)
                end
                hold off

        %         figure
                final_output=[];
                t=[];
                for n=1:Ne
                  [r,c] = find(L==n);
                  n1=picture(min(r):max(r),min(c):max(c));
                  n1=imresize(n1,[42,24]);
        %            imshow(n1)
                  pause(0.2)
                  x=[ ];

                totalLetters=size(imgfile,2);

                 for k=1:totalLetters

                    y=corr2(imgfile{1,k},n1);
                    x=[x y];

                 end
                 t=[t max(x)];
                 if max(x)>.45
                 z=find(x==max(x));
                 out=cell2mat(imgfile(2,z));

                final_output=[final_output out];
                end
                end

                file = fopen('number_Plate.txt', 'wt');
                    fprintf(file,'%s\n',final_output);
                    fclose(file);                     
                    winopen('number_Plate.txt')

                drawnow;   
                %end
but I am having an error of:
_Error using insertObjectAnnotation
Expected a string scalar or character vector for the parameter name.

Error in insertObjectAnnotation

Error in insertObjectAnnotation

Error in insertObjectAnnotation

Error in GoogleNet (line 56) I = insertObjectAnnotation(I, 'rectangle', PositionWhereRectangleShouldBe, label_str, score);_

[Florian Morsch]

Why did you open a new post on your previous one? Or did you forget your post here: https://de.mathworks.com/matlabcentral/answers/413211-hi-i-am-trying-to-put-a-box-around-the-car-and-have-it-s-confidence-level-placed-on-top-of-the-box?s_tid=mlc_ans_email_ques

PositionWhereRactangleShouldBe was an example, not something you should write into your code. You already have a "position" variable in your code, but didnt use it in the first place. Right now the rectangle will be placed at the random location [100 100] with width and heigth [50 50] which i gave as example, you wont mark your object with it.

Answer 1

[Image Analyst]

Maybe try using rectangle() or line() or plot() instead if you're having trouble with it and don't need it burned into the image.

[Syafiqah Daud]

Hi, I've tried that but i got an error of:

'Index exceeds array bounds.

Error in GoogleNet (line 52) label_str{ii} = ['Confidence: ' num2str(conf_val(ii),'%0.2f') '%'];'

[Image Analyst]

Apparently conf_val does not have ii elements in it. What is the value of ii, and what is the length of conf_val when you get the error?