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image delivery system

A transmission system and image technology, applied in image enhancement, image analysis, image communication, etc., can solve the problem of code increase and other problems, and achieve the effect of reducing code amount

Active Publication Date: 2018-01-16
MAXELL HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the case of transmitting such high-gradation image data under the condition that the transmission band of the network is limited, for example, the YUV component of the original image is sampled and encoded with 12 bits, so that the gray-scale expression of the image is improved, but on the other hand Increased code size

Method used

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Embodiment 1

[0036] figure 1 A configuration example of the first embodiment of the image distribution system of the present invention is shown. Hereinafter, a case where the present invention is applied to an in-vehicle camera system will be described as an example.

[0037] The image transmitting device 101 receives light from the outside and converts it into an image, encodes the obtained image to generate a bit stream, packets or frames the bit stream, and outputs it to the image receiving device 121 via the network IF 109 . In addition, the image transmission device 101 inputs packetized or framed bit precision information output from the image reception device 121 , which will be described later.

[0038] The imaging unit 102 converts light input from the outside into a high-gradation image, and outputs the high-gradation image as an encoding target image.

[0039] Hereinafter, the processing of the transformation unit 103, the local decoding unit 104, the quantization unit 105, th...

Embodiment 2

[0097] Figure 13 A configuration example of the second embodiment of the image distribution system of the present invention is shown. In addition, in Figure 13 , the structure is basically the same as figure 1 The same, except for the following points: the bit accuracy information generating unit 225 does not exist in the image receiving device 221 but exists inside the image transmitting device 201, and the processing mode information output from the image processing unit 124 is input to the bit through the network IF 222 and the network IF 209. Accuracy information generation unit 225 .

[0098] Add and figure 1 For the same symbols, descriptions of their operations are appropriately omitted.

[0099] The network IF 222 receives the packetized or framed bit stream from the image transmission device 201, unpacks or deframes the bit stream, and outputs it to the decoding unit 123, which is the same as that of the first embodiment. The ADAS processing mode information ou...

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Abstract

To provide an image transmission system capable of efficiently reducing the code amount while maintaining the gradation of a high-gradation image even when the application of the subsequent stage changes. An image transmission system transmits image data from a sending side and performs image processing on a receiving side, and includes: an image sending device that encodes an input image to output and transmit a bit stream; an image receiving device that receives and decodes the bit stream to Perform image processing; the bit precision information generation unit generates bit precision information for each region in the image; the quantization control unit controls the quantization process performed inside the image transmission device according to the bit precision information generated by the bit precision information generation unit and the image processing unit performs image processing using the decoded image decoded by the image receiving device, and the bit information generation unit switches the generation method of the bit precision information according to the processing mode of the image processing unit.

Description

[0001] This application claims the priority of Japanese Patent Application No. 2012-229431 for which it applied on October 17, 2012, The content is taken in in this application by reference. technical field [0002] The present invention relates to image delivery systems. Background technique [0003] In recent years, image distribution systems connected to networks have been widely used in surveillance camera systems and the like. In addition, in the future, applications such as connecting a plurality of cameras installed in automobiles to effective use in a driving support system through a digital network are considered. [0004] In the above-mentioned use example, in order to improve the visibility in bright and dark areas and improve the visibility of the shape of detail areas, it is necessary to use a high-gradation image obtained by expanding the gradation from the conventional 8-bit precision YUV signal. [0005] In the case of transmitting such high-gradation image ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/167H04N7/18
CPCH04N7/183H04N19/176H04N19/46H04N19/167H04N19/124G06T2207/30252G06V20/588
Inventor 海野恭平冈田光弘小味弘典
Owner MAXELL HLDG LTD