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how can I start coding CBIR using color histogram

조회 수: 4(최근 30일)
shima said
shima said 2013년 5월 27일
댓글: Ragini Gaikwad 2021년 5월 14일
Hi all
I need help in how could I make a simple CBIR system using histogram technique
from where i should start
  댓글 수: 2
Ragini Gaikwad
Ragini Gaikwad 2021년 5월 14일
sorry for was a mistake

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Image Analyst
Image Analyst 2013년 5월 27일
You mean like this: ?
Just try taking the mean of each color channel and have that be your feature vector that you save along with each image's record in your data base.
% Extract the individual red, green, and blue color channels.
redChannel = rgbImage(:, :, 1);
greenChannel = rgbImage(:, :, 2);
blueChannel = rgbImage(:, :, 3);
% Get means.
meanRed = mean2(redChannel);
meanGreen = mean2(greenChannel);
meanBlue = mean2(blueChannel);
Then, for a desired color that you want to find in your database, search all records in the database for those whose mean colors are close enough to your desired color and return them.
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Image Analyst
Image Analyst 2013년 6월 14일
Just sort the distances and take the ones with the smallest difference first.

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shima said
shima said 2013년 6월 13일
hi again I used grayscale and i stuck when i compute Euclidean distance after i get it so what should i do how to retreive the similarity image in my database one qurey image and file image which have 111 images
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Walter Roberson
Walter Roberson 2013년 6월 14일
Find the indices of the images with the lowest Euclidean distance. Retrieve them however needed to retrieve an arbitrary image.
In your current code, how do you refer to (say) the 9'th image? The 37'th ?

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shima said
shima said 2013년 6월 14일
sorry , I didn't get what u meant both of you after I stort Euclidean distance or find the lowest what should I do i stuck there couldanyone to hlep me to write that in matlab
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Image Analyst
Image Analyst 2013년 6월 15일
The square root of the sum of the squares of the distances:
euclideanDistances = sqrt(sum((featureVector1 - featureVector2))^2));
or something like that.

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Nivedita Nagappa
Nivedita Nagappa 2013년 11월 14일
Hi...I ve a similar problem..and im totally new to Matlab...can anyone pls help me out in this..??
PS: I too want to develop a simple CBIR system using color histogram

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