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In this paper, we propose a new image splicing detection algorithm based on estimation of camera intrinsic parameters to detect splicing of figure photos or images with abundant geometry information. We use points, lines and other geometric features in the image to obtain constraint equations and then find the camera intrinsic parameters to determine possibilities of image splicing. In our algorithm,...
Digital cameras are widely used on research vessels to ascertain ice conditions in ice-infested seas. However, geometric distortion of images cannot be avoided if the camera is tilted relative to the sea surface. In this study, the geometric distortion induced by oblique photography was quantitatively estimated based on photogrammetric theory to enable accurate measurement of sea ice features. One...
In this paper, we show that the images of the circular points can be identified by solving the intersection of two imaged coplanar circles under projective transformation and thus metric planar rectification can be achieved. The advantage of this approach is that it eliminates the troublesome camera calibration or vanishing line identification step that underlies many previous approaches and makes...
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