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Image encoder, image sensing device, and operating method of image encoder

An image sensing and image technology, applied in the direction of image communication, color TV parts, TV system parts, etc., can solve problems such as errors, inability to perform DPCM compression, and affecting boundary pixels and other pixels

Pending Publication Date: 2021-10-29
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

However, boundary pixels located at the edge of the original image may not be able to perform DPCM compression because there are no peripheral pixels to be referenced
[0006] Also, if the difference between the border pixel value and the surrounding pixel values ​​is large, the error may affect the DPCM of the border pixel and the pixel values ​​of other pixels

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  • Image encoder, image sensing device, and operating method of image encoder
  • Image encoder, image sensing device, and operating method of image encoder
  • Image encoder, image sensing device, and operating method of image encoder

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[0030] Image compression is a process of generating coded image data (eg, compressed encoded image data) using less computational storage using raw image data (e.g., original uncompressed image data). Further, the image decompression is a process of decoding the encoded image data to generate reconstruction of image data. The reconstructed image data can be different from the original image data depending on the encoding method and the decoding method (eg, and the amount of compression loss). For example, differential pulse coding modulation (DPCM) is an encoding method for compressing the original image data using a peripheral pixel value.

[0031] The raw pixel data (e.g., uncompressed pixel data) associated with the boundary condition does not have a stream having data for referring to the original data, and the compression of the image may be difficult or possible. For example, since there is no peripheral pixel that will be referenced, the boundary pixel located at the edge o...

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Abstract

The present disclosure provides an image encoder, an image sensing device and an operating method of the image encoder. The image encoder is configured to encode an original image and reduce compression loss. The image encoder comprises an image signal processor and a compressor. The image signal processor is configured to receive a first frame image and a second frame image and generates a compressed image of the second frame image using a boundary pixel image of the first frame image. The image signal processor may include memory configured to store first reference pixel data which is the first frame image. The compressor is configured to receive the first reference pixel data from the memory and generate a bitstream obtained by encoding the second frame image based on a difference value between the first reference pixel data and the second frame image. The image signal processor generates a compressed image of the second frame image using the bitstream generated by the compressor.

Description

[0001] The present application claims priority to Korean Patent Application No. 10-2020-0051927, issued by the Korean Intellectual Property Office on April 29, 2020, which is incorporated herein by reference. Technical field [0002] The present disclosure relates to a method of image encoder, an image sensing device, and an operational image encoder. Background technique [0003] Modern computer uses image compression as a method of reducing resources for image storage or data transmission. The storage device in the computer can store more compressed image data than uncompressed image data. In addition, by transmitting compressed image files, wireless or wired data transmission faster and more reliable. [0004] Image compression is a process of generating encoded image data using less computational storage than original image data. Further, the image decompression is a process of decoding the encoded image data to generate reconstruction of image data. The reconstructed image da...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/154H04N19/186H04N19/503
CPCH04N19/154H04N19/186H04N19/503H04N23/90H04N23/80H04N19/55H04N19/433H04N5/772H04N9/8042H04N1/4175H04N23/50H04N5/917H04N19/14
Inventor 李元硕宋成旭崔允硕
Owner SAMSUNG ELECTRONICS CO LTD