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Photographic scene toleration technology and image conversion method

A technology of tolerance and technology, applied in image communication, exposure control, television, etc., can solve the problems of loss of image quality and can not really solve the problem of photography tolerance

Inactive Publication Date: 2008-12-03
张汉臣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing white compression and black expansion technologies are only based on the existing imaging technology, on the premise of losing a certain image quality. During the signal processing process, the bright area is compressed and the dark area is enlarged, which cannot really solve the tolerance of photography. It is a measure to compensate for the latitude of the image

Method used

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  • Photographic scene toleration technology and image conversion method
  • Photographic scene toleration technology and image conversion method

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Embodiment Construction

[0009] In the exposure process of photography, set a voltage value, which can be the voltage value of normal white exposure, or a voltage value close to the saturation voltage value of CCD, use this value as the reference voltage, and select the exposure requirement first before photography The aperture value, and the longest exposure time that can be used as the exposure time for photography. After the shooting starts, according to the preset time interval, the points of each pixel represented by all CCD photoreceptors are measured. When the voltage value of the CCD at a certain point reaches the reference voltage, record the time when the CCD reaches the reference voltage, that is, the time when the pixel reaches the reference voltage. When time permits, the exposure can be ended when all the pixels reach this voltage value. Data that reflects the exposure value of each point in time. That is: when the set voltage is constant, the time when each pixel reaches this voltage ...

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Abstract

This is a technology of raising the tolerance of imaging system in digital photography to get the imaging tolerance close to the realscene to set reference value during imaging to record the time from each pixel dot voltage to the reference value as the base of imaging data conversion. In most cases, it's not permitted to record the time having reached each dot of the reference voltage value when all the dots reach to the reference voltage value to unify all the pixel voltage value of not reaching the referente value as voltage or time unit to convert the image digits in accordance with the relations between the time and voltage value.

Description

Technical field: [0001] The invention relates to a photography real-scene latitude technology and an imaging conversion method, in particular to the field of digital photography. Background technique: [0002] Since the invention of photography technology, after more than 100 years of development, today's digital photography has not been able to solve the problem of tolerance of photography imaging technology. The existing white compression and black expansion technologies are only based on the existing imaging technology, on the premise of losing a certain image quality. During the signal processing process, the bright area is compressed and the dark area is enlarged, which cannot really solve the tolerance of photography. It is a measure to compensate for the latitude of the image. [0003] The present invention is just based on research to thoroughly solve the technical problem of latitude in photography technology, thereby obtaining a method for solving this problem. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/225G03B7/08
Inventor 张汉臣
Owner 张汉臣
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