Quasi-lossless image compression and decompression method of wireless endoscope system
Title:
Quasi-lossless image compression and decompression method of wireless endoscope system
Application Number:
200510126255
Application Date:
2005/12/02
Announcement Date:
2006/07/12
Pub. Date:
Publication Number:
1799492
Announcement Number:
Grant Date:
Granted Pub. Date:
ApplicationType:
Invention
State/Country:
11[China|beijing]
IPC:
A61B 1/04
Applicant(s):
Tsinghua University
Inventor(s):
Xie Xiang, Li Guolin, Li Xiaowen, Wang Zhihua
Key Words:
Quasi-lossless, image, compression, decompression, wireless endoscope system
Abstract:
The invention belongs to field of medical digital picture compression technique, which is a picture compression and decompression method based on compression first and color interpolation later, removing the high-frequency component of the picture with low-pass filter before compression, controlling the filtered wave picture dot percentage of the whole picture with mass controlling factor to improve the picture quality, determining the pixel area directly for coding without compression with interesting area to guarantee the picture quality in interesting area. The compression without damage is coded with JPEG-LS compression. The hardware diagram is relatively provided. Compressing the seven natural picture in the standard picture database for experiment, realizing the continuously adjustment of signal-to-noise ratio from 46.37 dB to infinity, the relevant compression rate changing in range of from 3.3 bit/ pixel point to 6.9 bit/ pixel point; if compressing the wireless endoscope picture, we can get the average picture compression rate of 2.18 bit/ pixel point and PSNR larger than 47.57dB.
Claim:
Priority:
PCT:
LegalStatus:

Recommend this patent:
1 2 3 4 5
Average ( 0 votes):
                                                                          Recommended Patents>>

Relevancy information

Stationary image compression code rate control method for integrated circuit design


Other Patents of Same Inventor

Variable bandwidth filter circuit for RFID read-write equipment
Radio system and device for sampling image in biology body cavity
Wireless type zero quiescent dissipation power supply controller
Dedicated IC chip for digital type electronic artificial ear
Sectional cross-coupling MOS tube for design of analog integrated circuit
Automatically requesting retransmission communication method of high code rate super short distance for wireless endoscope system
Bidirectional digital modulating multi-channel artificial cochlea system
Two-way multi-channel artificial cochlea system with on-chip signal processor
Radio frequency identification marking card with silicon base integrated antenna
Interior piezoelectric ceramic intermittent electricity supply device of implantation joint
Bi-directional digital wireless pressure monitoring system for biology implantation joint
Power-supplying circuit with zero-static consumption induction controlled
Portable radio frequency recognizing read-write machine
Radio frequency label based on position information and anti-conflict method
Low dissipation radio transceiver analog front-end assembly for endoscope capsule system
Image inhibiting filtering device capable of compensating LC network loss
Method for reducing analog-digital converter capacitance mismatch error based on capacitance match
Method for raising communication reliability of radio frequency identification system
Wire-less endoscope capsule micro-band antenna device
Integrated circuit system for bidirectional digital wineless endoscope capsule
Comparison and decision circuit in amplitude keying signal demodulation circuit module
Enciphering authentication for radio-frequency recognition system



News & Events More>>

Last Update  
2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
2008-3-31
  Selected patents owned by Tsinghua University filed in 2006 and 2007 are load.







Copyright 2008-2015 All Rights Reserved Patent License of China.      Designed by Easygo