i am doing matlab code for automatic licence plate recognition but error for compression and decompression is coming while using aviread .. can you please suggest me how to use mmreader for the code and one more is how to load tamplates in the code

% A Flexible Method for Recognizing Four-Digit Numbers on A License-Plate in A Video Scene % clear Command window clc clear all close all %load templates; %global templates; % Browse the Video from file [filename, pathname] = uigetfile('*.avi', 'Pick a video');

% Video to Frame Convertion file=aviinfo(filename); filename= (filename); % to get inforamtaion abt video file frm_cnt = file.NumFrames; % No.of frames in the video file

h = waitbar(0,'Please wait...'); font = '.bmp'; for i=1:frm_cnt frm(i) = mmreader(filename,i); % read the Video file RGBimg = frame2im(frm(i)); % Convert Frame to image file strNmae = num2str(i); writeName = strcat(strNmae,font);

    %     imwrite(RGBimg,writeName);
    %figure(1), imshow(RGBimg); % Color Image
    grayImg = rgb2gray(RGBimg); %convert gray
    % figure(2), imshow(grayImg);
    % median filter is applied for smoothing and unwanted noise removal
    grayImg = medfilt2(grayImg,[3 3]);
    %   dynamic thresholding is appiled
    grayImg = adapthisteq(grayImg);
    % figure(3), imshow(grayImg);

    % discret wavelet transform is applied for enhance the edge
    [LL LH HL HH] = dwt2(grayImg, 'haar');
    imgDWT = [LL,LH;HL,HH];
    % figure(4), imshow(imgDWT,[]);
    % find LH edge

    edgeImg = HL > 10;
    %         figure(5), imshow(edgeImg,[]);

    hei = edge(edgeImg,'sobel',0.11,'horizontal');
    vei = edge(edgeImg,'sobel',0.11,'vertical');
    vei2 = edge(edgeImg,'sobel',0.11,'vertical');
    vei = rot90(vei);
    horizontalProjection = sum(vei);
    verticalProjection = sum(hei);
    horizontalProjection(1:100)=0;
    maxIndexValue= find(horizontalProjection == max(horizontalProjection), 1, 'last' );
    top = maxIndexValue;tip = maxIndexValue;
    k=0.35;
    threshold = max(horizontalProjection)*k;
    s = std(horizontalProjection);

    while(horizontalProjection(1,top)>s)
        top = top-1;
    end
    while(horizontalProjection(1,tip)>s)
        tip = tip+1;
    end

    band = grayImg(top*2:tip*2,:);
    cannyBand = ~im2bw(band,0.5);
    msk=[0 1 1 1 0;
        0 1 1 1 0;
        0 1 1 1 0;];

    CC = bwconncomp(cannyBand);
    imgComp = imcomplement(cannyBand);
    label = bwlabel(imgComp);
    area = regionprops(label, 'Area');
    for no = 1:size(area,1)
        if (area(no,1).Area > 2000)

        else
            loclabel = find(label == no);
            label(loclabel) = 0;
        end

    end
    verticalBrightnessProjection = mean(band);
    rgbBand = RGBimg(top*1.5:tip*2,:,:);
    figure(7), imshow(rgbBand);
    out = recognitionLetter(rgbBand);
    waitbar(i/frm_cnt,h);
end
close(h)

Answer 1

[Image Analyst]

Try VideoReader(). If it's indeo5 encoding and you're on Windows 7, you're out of luck.

[sudunagunta]

thank you i will try that

[sudunagunta]

hai i have read videoreader it is not working i have a doubt that in for loop we can use the reader