Image retrieval algorithm based on numerical characteristics histogram
Wang Jianfen · Journal of Chongqing University of Posts and Telecommunications · 2013
This paper puts forward the image retrieval algorithm based on the numerical characteristics of random variables histogram in the compressed domain,the use of discrete cosine transform( discrete cosine transform,DCT),and the mathematical calculation of the image block expectation and variance,through the expectation and variance of the probability map to coordinate the establishment of cumulative histogram Figure and produce images of the feature vectors and regions. The similarity between query image and database image is computed using the correlation coefficient. The experiment is carried on two data sets. The result shows this method can achieve more effective retrieval precision.