Video salient region detection model based on wavelet transform and feature comparison

Abstract

Abstract With the advent of the era of big data, the Internet industry has produced massive amounts of multimedia video data. In order to process these video sequence data quickly and effectively, a visual information extraction method based on wavelet transform and feature comparison is proposed to perceive the target of interest by simulating the multi-channel spatial frequency decomposition function of human visual system which can quickly extract the significant distribution from the image and obtain region of interest (ROI). Firstly, the principle of visual attention mechanism and the visual salience detection were analyzed. Then, the DOG (Difference of Gaussian) function is taken as the wavelet basis function, and the wavelet data is used to decompose the image data in the spatial domain and frequency domain, thus applying to the multi-channel of the human visual system. Finally, the significant distribution in the entire image is obtained by global color comparison; thus, the region of interest is extracted. The extraction model of visual information proposed is simulated in MATLAB environment. The simulation results show that the proposed algorithm can extract ROI more accurately and efficiently, compared with the existing algorithms.

Keywords

• Wavelet transform
• Global feature
• Video sequence
• Region of interest
• Significant distribution
• DOG function