J4 ›› 2012, Vol. 30 ›› Issue (5): 487-.
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Electronic Image Stabilization Algorithm of Jitter Video
An efficient algorithm of electronic image stabilization based on ROI(Region Of Interest) was proposed in order to solve the jitter problem in video sequences.Firstly,the Gaussian pyramid is constructed by the captured images and each frame is down-sampled in the following.And then fine estimation is performed by using the optical flow gradient algorithm.So the parameters of affine transform are obtained.Finally,motion compensation is conducted to each frame and the stabilization sequence is acquired.Experimental results show that the subjective effect of the algorithm is good.The algorithm proposed suits for the motion with translation,rotation and scaling while it has better robustness and precision.Compared with the original images before process,the PSNR(Peak Signal-to-Noise Ratio) of the stabled sequences improved approximate 10 dB.
- School of Electronic Information Engineering,Tianjin University,Tianjin 300072,China
