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Data compression apparatus, data compression program and image-taking apparatus

A technology of data compression and camera device, applied in focusing device, installation, image communication, etc., can solve problems such as large amount of image data

Inactive Publication Date: 2010-12-29
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the data transfer rate is limited by the interface standard (for example, USB 2.0) used in data communication, and the amount of image data representing a moving image is usually large

Method used

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  • Data compression apparatus, data compression program and image-taking apparatus
  • Data compression apparatus, data compression program and image-taking apparatus
  • Data compression apparatus, data compression program and image-taking apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0149] Next, exemplary embodiments will be described.

[0150] figure 1 is a schematic diagram of a camera system using USB.

[0151] figure 1 The shown camera system includes a USB camera 2 , a USB cable and a personal computer 4 .

[0152] The USB camera 2 includes a function of compressing and transferring image data. The USB camera 2 is an embodiment of the data compression device according to the present invention, and is also an embodiment of the imaging device according to the present invention.

[0153] The personal computer 4 includes functions of receiving compressed data transmitted from the USB camera 2 via the USB cable 3 and decompressing the received compressed data.

[0154] figure 2 It is the internal block diagram of the USB camera.

[0155] figure 2 The illustrated USB camera includes: an imaging section 20 that performs imaging; an environmental information acquisition section 30 that acquires data on the imaging environment, such as sound, wind sp...

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PUM

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Abstract

It is possible to provide a compression ratio data compression device, a data compression program, and an imaging device which can estimate a compression degree in a short processing time. The data compression device includes: a difference generation unit which processes continuous numeric values constituting data to be compressed, i.e., obtains a difference between adjacent numeric values which are adjacent to each other directly or at a constant distance so as to generate new data-to-be-compressed which is formed by continuous numeric values indicating the differences; a compression unit which executes a compression process on the data-to-be-compressed generated by the difference generation unit; and an estimation unit which acquires concentration degrees of the respective numeric values constituting the data-to-be-compressed generated by the difference generation unit to a numeric value expressing a difference ''0'' and higher estimates the compression degree when the data-to-be-compressed is compressed by the compression unit as the concentration degree increases.

Description

technical field [0001] The present invention relates to a data compression device for performing compression processing on data to be compressed composed of a series of numerical values, a data compression program, and an imaging device having an imaging optical system that forms a image, and can adjust the imaging position. Background technique [0002] In recent years, technologies for converting image information into electronic data have rapidly developed, such as imaging devices mainly represented by digital cameras and image reading devices mainly represented by scanners. Along with the development of such technologies, technologies for compressing electronic data to reduce the amount of electronic data have also been developed. Reducing the amount of electronic data using such data compression techniques can save the storage capacity of a storage medium storing electronic data and shorten the transfer time for transferring electronic data. [0003] Recently, for a r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26G02B7/36G03B13/36H04N5/232
CPCH04N5/23206H04N19/00957H04N9/045H04N5/23212H04N5/235H04N5/232G03B13/36H04N19/93H04N23/673H04N23/70
Inventor 杉田由纪夫
Owner FUJIFILM CORP
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