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Line-based embedded video compression method with fixed code rate, and image processing equipment

An image processing device and fixed bit rate technology, applied in image communication, digital video signal modification, color TV, etc., can solve problems such as inability to guarantee constant bit rate, huge memory bandwidth and processing capacity

Active Publication Date: 2018-07-31
NOVATEK MICROELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, storing and transmitting such large amounts of video content requires enormous memory bandwidth and processing power
While various embedded compression methods and systems have been developed to reduce this burden, constant bitrate cannot be guaranteed with visually lossless performance

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  • Line-based embedded video compression method with fixed code rate, and image processing equipment
  • Line-based embedded video compression method with fixed code rate, and image processing equipment
  • Line-based embedded video compression method with fixed code rate, and image processing equipment

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Embodiment Construction

[0033] Some embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the present application are depicted. Indeed, various embodiments of the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this invention will satisfy applicable legal requirements. Like reference numerals refer to like elements throughout.

[0034] Figure 1A An exemplary image processing device according to one of the exemplary embodiments of the present invention, which utilizes the proposed fixed bit rate and line-based embedded video compression method, is described from a hardware perspective.

[0035] Referring to FIG. 1 , an exemplary image processing device 100 will include, but is not limited to, a processor 110 and a storage medium 120 . The image processing apparatu...

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Abstract

The invention discloses a line-based embedded video compression method with a fixed code rate, and image processing equipment. The method comprises the following steps: receiving the current coding frame, grouping the pixels in the current coding frame on the basis of line-by-line, and encapsulating the grouped pixel into a pixel line segment; computing complexity information of the current line segment according to the pixel in the current pixel line segment and the adjacent pixel; coding the current pixel line segment by using the differential pulse-coding modulation mode (DPCM) and a truncation mode according to the quantization parameter, thereby producing the DPCM code stream and the truncation code stream; and computing the new QP corresponding to the to-be-processed next pixel linesegment by feeding back the code traffic used by the current pixel line segment.

Description

technical field [0001] The invention relates to a fixed code rate and line-based embedded video compression method and an image processing device using the method. Background technique [0002] With the rapid development of computers, networks, and digital imaging technologies, massive amounts of video data have been widely used in digital playback devices such as digital video recorders, high-definition televisions, home theater computers, video conferencing devices, and smart phones. However, storing and transmitting such large amounts of video content requires enormous memory bandwidth and processing power. Although several embedded compression methods and systems have been developed to reduce this burden, constant bit rate cannot be guaranteed with visually lossless performance. Contents of the invention [0003] Therefore, the present invention is directed to a fixed code rate and line-based embedded video compression method and an image processing device using the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/112H04N19/124H04N19/157H04N19/16
CPCH04N19/112H04N19/124H04N19/157H04N19/16H04N11/046H04N19/15H04N19/182
Inventor 卜晓明陈建文胡博钦
Owner NOVATEK MICROELECTRONICS CORP
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