how can I start coding CBIR using color histogram

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shima said
shima said 2013-5-27
移动：DGM 2023-2-20
Hi all
I need help in how could I make a simple CBIR system using histogram technique
from where i should start
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Image Analyst
Image Analyst 2021-5-13
@Ragini Gaikwad, this is not a comment for @shima said on regarding his 8 year old question on CBIR. This is a new question, so please start your own thread.

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回答（1 个）

Image Analyst
Image Analyst 2013-5-27
You mean like this: http://labs.tineye.com/multicolr/ ?
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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shima said
shima said 2013-6-14
移动：DGM 2023-2-20
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
Image Analyst
Image Analyst 2013-6-15
移动：DGM 2023-2-20
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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