| Citation: | Jiazhen CHEN, Weimin WU, Zihua ZHENG, Feng YE, Guiren LIAN, Li XU. Controllable Magnification for Visual Saliency Object Based on Virtual Optics[J]. Journal of Electronics & Information Technology, 2020, 42(5): 1209-1215. doi: 10.11999/JEIT190469
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A high-resolution controllable magnification method for visual saliency object based on virtual optics is proposed in this paper. The original image is placed on the virtual object plane. Firstly, the diffractive wave of the original image on the virtual diffraction plane is obtained by inverse diffraction calculation, and then the forward diffraction calculation is carried out after the virtual diffraction wave is irradiated by spherical wave. The original images with different magnification can be reconstructed by changing the position of the observation plane. The simulation results show that compared with the general interpolation method, the magnified image shows a good visual perception effect, especially in the saliency region. When the degraded face image is used as the signal to be reconstructed, the significant areas such as eyes and nose are clearer than the general method. The local salient region in the original image is segmented by the level set method combined with salient map, and the magnification and contour extraction are performed. The contours show good smoothness.
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