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Image conversion

About: Image conversion is a research topic. Over the lifetime, 2490 publications have been published within this topic receiving 19077 citations.


Papers
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Patent
08 Oct 2003
TL;DR: In this paper, the authors proposed a multiple-hand fingerprint and finger form collector, which comprises an illumination light source, a right angle prism column, an optical imaging mechanism, a sensor array, an A/D converter, a data buffer and an image signal composite circuit.
Abstract: The utility model relates to a multiple-hand fingerprint and finger form collector, which comprises an illumination light source, a right angle prism column, an optical imaging mechanism, a sensor array, an A/D converter, a data buffer and an image signal composite circuit, wherein, three surfaces of the right angle prism column are respectively a finger print and finger form collection platform, an entry plane of the illumination light source and an exit plane of the illumination light source; the optical imaging mechanism is composed of composite lenses 1, 2, a reflector and a composite lens 3, the composite lenses 1, 2 of which the backs are mutually opposite are close to the exit plane of the right angle prism, and the front of the composite lens 2 is provided with the reflector; the composite lens 3 is arranged in the direction of reflection light of the reflector, photoelectric image conversion is carried out on optical imaging output of the composite lens 3 by the sensor array, the optical imaging output is converted into digital image signals by the A/D converter, and the left and the right digital image signals in an image data buffer are jointed into complete fingerprint and finger form electrical signal image data by the image signal composite circuit. The utility model provides a data collector which is used for personal identification and can simultaneously collect multiple-hand fingerprints and finger forms.

6 citations

Patent
13 Dec 2010
TL;DR: In this article, a method and a device for converting an image to a 3D image by an image conversion device can be found, which can include: receiving and setting overall depth information for an original image; classifying the original image into partial objects and setting three-dimensional information for each of the partial objects; generating a first image by moving the original original image by use of the 3D information; receiving and set a zero point for the original images; and generating a second image by using the zero point; and combining the first image and the second images by combining the
Abstract: A method and a device for converting an image are disclosed According to an embodiment of the present invention, the method for converting a two-dimensional image to a three-dimensional image by an image conversion device can include: receiving and setting overall depth information for an original image; classifying the original image into partial objects and setting three-dimensional information for each of the partial objects; generating a first image by moving the original image by use of the three-dimensional information; receiving and setting a zero point for the original image; generating a second image by moving the original image by use of the zero point; and generating a three-dimensional image by combining the first image and the second image Accordingly, a still image can be converted to a three-dimensional image

6 citations

Patent
13 Mar 2009
TL;DR: A barcode recognition apparatus consists of an image interface, an image analysis unit, image conversion unit, and a bar recognition unit as mentioned in this paper, where the image interface acquires an image including a barcode captured by a camera and decides an image conversion method for the conversion from the input image into an image for recognition processing.
Abstract: A barcode recognition apparatus includes an image interface, an image analysis unit, an image conversion unit, and a bar recognition unit. The image interface acquires an image including a barcode captured by a camera. The image analysis unit analyzes a characteristic of an input image acquired from the camera, and decides an image conversion method for the conversion from the input image into an image for recognition processing on the basis of the analysis result. The image conversion unit converts the input image into an image for recognition processing by the image conversion method decided by the image analysis unit. The bar recognition unit performs barcode recognition processing for the image for recognition processing obtained by the image conversion unit.

6 citations

Patent
07 Apr 1993
TL;DR: In this article, an omnidirectional vision system is provided with an optical system that can obtain a video image with a vision area around 360 degrees and convert the central projection, an image pickup means 2 that converts an optical image obtained through the optical system 1 into image data, a display means 5, and a display control means 6.
Abstract: PROBLEM TO BE SOLVED: To provide an omnidirectional vision system that can sufficiently trace a moving picture even when number of pixels is increased through high- speed image conversion processing and can be downsized. SOLUTION: The omnidirectional vision system is provided with an optical system 1 that can obtain a video image with a vision area around 360 degrees and convert the central projection, an image pickup means 2 that converts an optical image obtained through the optical system 1 into image data, an image recording means 3 that records an output from the image pickup means 2, an image conversion means 4 that receives image data into a panorama image or a perspective image or the like, a display means 5, and a display control means 6. The image control means 4 consists of a hardware unit including an arithmetic logic circuit for panorama conversion and perspective conversion and can conduct image conversion processing at a higher speed than that of a conventional technology where software conducts the processing and then the omnidirectional vision system can be downsized.

6 citations

Patent
07 Oct 2010
TL;DR: In this paper, the authors proposed a method to reduce the load of operation for cutting an optional part from a distorted circular image taken by a fish-eye lens and converting it to a planar regular image with minimized distortion.
Abstract: PROBLEM TO BE SOLVED: To reduce the load of operation for cutting an optional part from a distorted circular image taken by a fish-eye lens and converting it to a planar regular image with minimized distortion. SOLUTION: An image conversion device stores a distorted circular image in a memory 220. When a user designates a cut-out center point PP, a magnification m, and a planar inclination ϕ to a unit 110, rotational coefficients A-F are calculated in a coefficient calculation section 240. A coordinate conversion section 270 performs mutual conversion of a coordinate (x, y) within the memory 220 and a coordinate (u, v) within a memory 230 by a conversion expression using the coefficients A-F to obtain a planar regular image. When a fish-eye lens other than an orthographic system is used, projection system conversion by conversion sections 210 and 280 is performed to apply a conversion expression of orthographic system. When the coordination conversion in the coordinate conversion section 270 or the projection system conversion in the conversion section 280 is performed, processing referring to a preliminarily prepared table is substituted for operation including extraction of square root or calculation of inverse to reduce the operation load. COPYRIGHT: (C)2011,JPO&INPIT

6 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202132
202074
2019117
2018115
2017100
2016107