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Generating hi-res dewarped book images

机译:生成高分辨率的变形书图像

摘要

Systems and methods for generating high resolution dewarped images for an image of a document captured by a 3D stereo digital camera system, or a mobile phone camera capturing a sequence of images, which may improve OCR performance. Example embodiments include a compact stereo camera with two sensors mounted at fixed locations, and a multi-resolution pipeline to process and to dewarp the images using a three dimensional surface model based on curve profiles of the computed depth map. Example embodiments also include a mobile phone including a camera which captures a sequence of images, and a processor which computes a disparity map using the captured sequence of image frames, computes a model of the at least one document page by generating a cylindrical three dimensional geometric surface using the computed disparity map, and renders a dewarped image from the computed model.
机译:用于为由3D立体数字照相机系统或移动电话照相机捕获的图像序列生成高分辨率图像的高分辨率变形图像的系统和方法,可以改善OCR性能。示例实施例包括具有在固定位置处安装的两个传感器的紧凑型立体相机,以及基于所计算的深度图的曲线轮廓使用三维表面模型来处理图像并使其变形的多分辨率管线。示例实施例还包括一种移动电话,该移动电话包括捕获图像序列的照相机,以及处理器,该处理器使用捕获的图像帧序列来计算视差图,并通过生成圆柱形三维几何图形来计算至少一个文档页面的模型。使用计算的视差图绘制表面,并从计算的模型渲染变形的图像。

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