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Image picking-up method and image picking-up device

An image capture device and image capture technology, applied in the field of image capture devices

Active Publication Date: 2015-03-25
ABILITY ENTERPRISE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, the general current photosensitive element can only restore 256 brightness gray scales

Method used

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  • Image picking-up method and image picking-up device
  • Image picking-up method and image picking-up device
  • Image picking-up method and image picking-up device

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Embodiment Construction

[0012] Below in conjunction with accompanying drawing, structural principle and working principle of the present invention are specifically described:

[0013] Please refer to figure 1 , which respectively represent a block diagram of an image capturing device according to an embodiment of the present invention. For example, the image capture device 1 of this embodiment includes an image capture system 10 , a photosensitive element 20 and a processor 30 . For example, the image capture system 10 mainly includes aperture components, shutter components, shutter parameter information and sensitivity information simulation components and corresponding control software and hardware components, wherein the sensitivity can be the International Organization for Standardization (International Organization for Standardization, ISO ) Sensitivity.

[0014] The photosensitive element 20 performs light metering on the input image Pi to correspondingly find the luminance statistical distri...

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Abstract

The invention discloses an image picking-up method and an image picking-up device. The image picking-up method comprises the following steps: (a): sensing light of an input image so as to correspondingly find out statistical brightness distribution data; (b): judging whether the statistical brightness distribution data has multiple peaks and whether difference values between multiple peak brightness values corresponding to the peaks are substantially larger than a critical brightness difference value, and if so, executing a step (c): computing a group of image shooting parameters corresponding to the peak brightness values; (d): according to the group of image shooting parameters, shooting multiple picked images corresponding to the peak brightness values, and corresponding the multiple peak brightness values to a brightness target value; and (e): synthesizing the picked images so as to obtain high-dynamic range picked images corresponding to the input image. The invention further provides an image picking-up device. The image picking-up device comprises an image picking-up system, a light-sensing element and a processor.

Description

technical field [0001] The present invention relates to an image capture method and an image capture device using the method, and in particular to an image capture method capable of automatically performing high dynamic range image synthesis operations and an image capture device using the method. Background technique [0002] Generally speaking, the luminance gradation in the real world is much larger than the gradation limit of the photosensitive element used in any current image capture device. For example, most photosensitive elements use 8 bits to sense a color channel. In other words, the general current photosensitive element can only restore 256 brightness gray scales. However, in real-world scenes, the brightness scale from the lowest grayscale brightness to the highest grayscale brightness often far exceeds the aforementioned numerical range. Accordingly, how to design a high dynamic range (HDR) image technology that can effectively increase the dynamic range of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/355
Inventor 陈弘哲
Owner ABILITY ENTERPRISE CO LTD