نتایج جستجو برای: document image rectification
تعداد نتایج: 525664 فیلتر نتایج به سال:
Technology has made significant strides in recent years, which accounts for how pervasive it is our daily lives. In order to address the fundamental issue with historical document preservation, namely their degeneration, this work suggests using new technology. The method built on pieces of artificial intelligence that can read writing from a page and recognize useful information, converting in...
SUMMARY This research presents a method of rectification for the image flow acquired by UAV. The sensor on the UAV is a multi-channel push broom sensor. The linear array can cover a stripe with approximately 6 Km on the ground. The motions (roll, pitch, yaw, etc) of the UVA platform are influenced by the relatively low-altitude flying so that have the attitude changed which are terrible to prod...
Wide field-of-view (FOV) cameras, which capture a larger scene area than narrow FOV are used in many applications including 3D reconstruction, autonomous driving, and video surveillance. However, wide-angle images contain distortions that violate the assumptions underlying pinhole camera models, resulting object distortion, difficulties estimating distance, area, direction, preventing use of of...
At present, HRSI (High-resolution Satellite Imagery) is more and more widely applied for surveying, land, constructing, production and living field, and it becomes increasingly important to acquire orthophotograph by processing geometric rectification of satellite original images. Less or without GCPs (Ground Control Points) in several parts of area is a puzzled problem for remote sensing image...
This paper gives an overview over different photogrammetric single image techniques, like digital rectification, unwrapping of parametric surfaces and differential rectification methods. It shows the new possibilities for the generation of orthoimages and image mosaics using digital image processing methods even on low-cost personal computers. After a short description of the implemented method...
A model based approach for rectifying the camera image of the bound document has been developed, i.e., the surface of the document is represented by a general cylindrical surface. The principle of using the model to unwrap the image is discussed. Practically, the skeleton of each horizontal text line is extracted to help estimate the parameter of the model, and rectify the images. To use the mo...
This paper describes a method for image rectification of a trinocular setup. The rectification method used is an extension of a recent approach based on the fundamental matrix to generate the correcting homographies in the case of a stereo pair. The extended method uses the fact that the triplet of images can be treated as two pairs and that homographies are projections of the different images ...
This paper deals with automatic Single View Reconstruction (SVR) of multi-planar scenes characterized by a profusion of straight lines and mutually orthogonal line-pairs. We provide a new shape-from-X constraint based on this regularity of angles between line-pairs in manmade scenes. First, we show how the presence of such regular angles can be used for 2D rectification of an image of a plane. ...
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