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Image encoding device and camera system

An image coding and coding technology, applied in image communication, digital video signal modification, electrical components, etc., can solve problems such as image quality degradation, and achieve the effect of preventing image quality degradation, reducing power consumption and processing time.

Active Publication Date: 2016-04-06
PANASONIC SEMICON SOLUTIONS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, in the above-mentioned Patent Document 1, since the properties of the photographed image are not reflected in the selection of the reference mode, the image quality is significantly degraded depending on the image.

Method used

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  • Image encoding device and camera system

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Experimental program
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Embodiment approach 1

[0026] The camera system 100 according to Embodiment 1 of the present invention, such as figure 1 As shown, it includes: camera device 101 ; camera control device 102 ; image processing device 103 ; storage device 104 ; and display device 105 . The camera system 100 is installed, for example, in a network camera, a vehicle camera, a digital video camera, or a digital still camera.

[0027] The imaging device 101 converts video light into an electrical signal with an imaging element.

[0028] The imaging control device 102 takes in an electrical signal obtained by the imaging element of the imaging device 101 , performs digital conversion on the electrical signal, and outputs a video signal. In addition, the imaging control device 102 controls the acquisition timing of the electric signal and the irradiation time of the video light to the imaging element of the imaging device 101 .

[0029] The image processing device 103 includes an image input unit 106 and an image encoding...

Embodiment approach 2

[0061] The camera system 100 according to Embodiment 2 of the present invention, such as Figure 6 As shown, the compression control unit 111 includes a coding amount storage unit 601 in addition to the scene determination unit 113 and the image difference determination unit 114 . The coded amount storage unit 601 stores the coded amount obtained by the encoding process performed by the compression processing unit 110 .

[0062] In addition, in the camera system 100 of the second embodiment, the compression processing unit 110 and the compression control unit 111 replace figure 2 Execute the action shown Figure 7 action shown. Such as Figure 7 As shown, in Embodiment 2, the compression control unit 111 executes the operation of step 701 before step 201 .

[0063] In step 701, the scene determination unit 113 determines whether or not the code amount stored in the code amount storage unit 601 exceeds a predetermined threshold, and if it exceeds, it is determined that the...

Embodiment approach 3

[0077] In the camera system 100 according to Embodiment 3 of the present invention, the compression processing unit 110 and the compression control unit 111 replace Figure 7 Execute the action shown Figure 10 action shown. Such as Figure 10 As shown, in Embodiment 3, when it is determined in step 701 that the code amount accumulated in the code amount storage unit 601 does not exceed a predetermined threshold, the process proceeds to step 1001 .

[0078]In step 1001, the compression control unit 111 judges whether or not the code amount stored in the code amount storage unit 601 is lower than a predetermined threshold value. In the case of this, it is determined that the image is in a normal compressed state. If it is determined that the image is in the low compression state, the process proceeds to step 203 , while if it is determined that the image is in the normal compression state, the process proceeds to step 201 .

[0079] Since the rest of the configuration and a...

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Abstract

An image encoding device and camera system. The compression control unit (111) of the present invention can perform prediction method selection that selects any one of forward direction prediction, backward direction prediction, and bidirectional prediction as a prediction method for encoding processing based on the spatial frequency of an encoding target image. The processing determines whether to execute the prediction method selection processing based on the image motion information indicating the amount of motion of the encoding target image.

Description

technical field [0001] The present invention relates to an image encoding device for encoding moving images and a camera system including the image encoding device. Background technique [0002] An image coding device that performs intra-frame coding and inter-frame coding by using a method according to MPEG (Moving Picture Experts Group) is known in the prior art. In such an image encoding device, in recent years, along with the enlargement of the image size used for high-quality images, an increase in power consumption and processing time necessary for encoding processing has become a problem. In order to solve such a problem, the image encoding device disclosed in Patent Document 1 selects a reference mode using bidirectional encoding and a reference mode not using bidirectional encoding according to the encoding execution environment such as resolution setting or frame rate setting. any of them. Thus, encoding processing according to the execution environment is perfor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/105H04N19/139H04N19/172H04N19/15H04N19/109H04N19/14H04N19/137H04N19/18H04N19/577H04N19/50H04N19/12H04N19/134H04N19/136H04N19/146H04N19/196H04N19/423H04N19/503H04N19/51H04N19/80H04N19/85
CPCH04N19/105H04N19/109H04N19/137H04N19/139H04N19/14H04N19/15H04N19/172H04N19/18H04N19/577
Inventor 植松良介方城正博小川雅裕
Owner PANASONIC SEMICON SOLUTIONS CO LTD
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