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长春光学精密机械与物... [4]
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OAI收割 [8]
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期刊论文 [5]
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Robust Adversarial Watermark Defending Against GAN Synthesization Attack
期刊论文
OAI收割
IEEE SIGNAL PROCESSING LETTERS, 2024, 卷号: 31, 页码: 351-355
作者:
Xu, Shengwang
;
Qiao, Tong
;
Xu, Ming
;
Wang, Wei
;
Zheng, Ning
  |  
收藏
  |  
浏览/下载:16/0
  |  
提交时间:2024/07/03
Watermarking
Transform coding
Generative adversarial networks
Forgery
Image coding
Discrete cosine transforms
Decoding
GAN synthesized image
adversarial watermark
JPEG compression
一种支持密文转码的JPEG2000图像加密算法
期刊论文
OAI收割
计算机科学, 2014, 卷号: 41, 期号: 6, 页码: 84-88,93
傅勇
;
易小伟
;
马恒太
  |  
收藏
  |  
浏览/下载:29/0
  |  
提交时间:2014/12/16
图像加密
JPEG2000压缩
安全转码
Image encryption
JPEG2000 compression
Secure transcoding
No-reference perceptual image quality metric using gradient profiles for jpeg2000
期刊论文
iSwitch采集
Signal processing-image communication, 2010, 卷号: 25, 期号: 7, 页码: 502-516
作者:
Liang, Luhong
;
Wang, Shiqi
;
Chen, Jianhua
;
Ma, Siwei
;
Zhao, Debin
收藏
  |  
浏览/下载:42/0
  |  
提交时间:2019/05/10
Blur
Ringing
Perceptual quality
Gradient profile
Image compression
Jpeg2000
No-reference perceptual image quality metric using gradient profiles for JPEG2000
期刊论文
OAI收割
SIGNAL PROCESSING-IMAGE COMMUNICATION, 2010, 卷号: 25, 期号: 7, 页码: 502-516
作者:
Liang, Luhong
;
Wang, Shiqi
;
Chen, Jianhua
;
Ma, Siwei
;
Zhao, Debin
  |  
收藏
  |  
浏览/下载:46/0
  |  
提交时间:2019/12/16
Blur
Ringing
Perceptual quality
Gradient profile
Image compression
JPEG2000
Design of multispectral remote sensing image compression system (EI CONFERENCE)
会议论文
OAI收割
2010 International Conference on Computer Application and System Modeling, ICCASM 2010, October 22, 2010 - October 24, 2010, Shanxi, Taiyuan, China
作者:
Xu S.-Y.
收藏
  |  
浏览/下载:20/0
  |  
提交时间:2013/03/25
In order to get the higher compression quality of multispectral remote sensing image
which taken the JPEG2000 as the standard
used FPGA and special compression chip ADV212 to realize the remote sensing image compression system is proposed. The system used the specialty compression chip ADV212 which is newly relaesed by Analog Device company. It used to develop fast high-quality compression for the large amount of remote sensing image data. The system realized the image data's input
the compression stream's output
the image preprocessing as well as to control the ADV212 chip's working pattern through FPGA. The experiment result shows that this system which has such characteristics as low power consumption. low cost and easy adjustmen and has a good compressing effect. Meet the requirement of the multispectral remote sensing image's high compression ratio. 2010 IEEE.
detecting double jpeg compression with the same quantization matrix
期刊论文
OAI收割
IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY, 2010, 卷号: 5, 期号: 4, 页码: 848-856
Huang Fangjun
;
Huang Jiwu
;
Shi Yun Qing
  |  
收藏
  |  
浏览/下载:25/0
  |  
提交时间:2011/05/23
Digital forensic
double joint photographic experts group (JPEG) compression
quantization matrix
Storage and compression design of high speed CCD (EI CONFERENCE)
会议论文
OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 19, 2008 - November 21, 2008, Chengdu, China
Cai X.
;
Zhai L. P.
收藏
  |  
浏览/下载:58/0
  |  
提交时间:2013/03/25
In current field of CCD measurement
large area and high resolution CCD is used to obtain big measurement image
so that
speed and capacity of CCD requires high performance of later storage and process system. The paper discusses how to use SCSI hard disk to construct storage system and use DSPs and FPGA to realize image compression. As for storage subsystem
Because CCD is divided into multiplex output
SCSI array is used in RAID0 way. The storage system is composed of high speed buffer
DMA controller
control MCU
SCSI protocol controller and SCSI hard disk. As for compression subsystem
according to requirement of communication and monitor system
the output is fixed resolution image and analog PAL signal. The compression means is JPEG2000 standard
in which
9/7 wavelets in lifting format is used. 2 DSPs and FPGA are used to compose parallel compression system. The system is composed of FPGA pre-processing module
DSP compression module
video decoder module
data buffer module and communication module. Firstly
discrete wavelet transform and quantization is realized in FPGA. Secondly
entropy coding and stream adaption is realized in DSPs. Last
analog PAL signal is output by Video decoder. Data buffer is realized in synchronous dual-port RAM and state of subsystem is transfer to controller. Through subjective and objective evaluation
the storage and compression system satisfies the requirement of system. 2009 SPIE.
Study of unequal error protection method based on JPEG2000 for surveyingmapping image (EI CONFERENCE)
会议论文
OAI收割
International Conference on Computer Science and Software Engineering, CSSE 2008, December 12, 2008 - December 14, 2008, Wuhan, Hubei, China
Yao Q.
;
Cao M.
收藏
  |  
浏览/下载:167/0
  |  
提交时间:2013/03/25
On aviation mapping
compression image maybe not decode because of wireless transmission interference. UEP(Unequal Error Protection) scheme is put forward about layer and block structure of JPEG2000 image compression method
flexibly enhances local reconfigurable image's quality which is in favor of identifier in the region of interest. 2008 IEEE.
and realizes three degrees UEP of data block
data header
image data via various degrees correction-coding under the condition of obstruct
naked and shade. BCH
RS and Hamming coding are simulated
and image decoding success rate and image's quality are analyzed according to different coding and ROI (Region of Interest) in the Gaussian white noise model and rayleigh fading model. Results shows that the method we putted forward roughly improves decoding success rate
at the same time
almost not increasing bandwidth
Wavelet packet and neural network basis medical image compression (EI CONFERENCE)
会议论文
OAI收割
4th International Conference on Photonics and Imaging in Biology and Medicine, September 3, 2005 - September 6, 2005, Tianjin, China
Zhao X.
;
Wei J.
;
Zhai L.
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2013/03/25
It is difficult to get high compression ratio and good reconstructed image by conventional methods
we give a new method of compression on medical image. It is to decompose and reconstruct the medical image by wavelet packet. Before the construction the image
use neural network in place of other coding method to code the coefficients in the wavelet packet domain. By using the Kohonen's neural network algorithm
not only for its vector quantization feature
but also for its topological property. This property allows an increase of about 80% for the compression rate. Compared to the JPEG standard
this compression scheme shows better performances (in terms of PSNR) for compression rates higher than 30. This method can get big compression ratio and perfect PSNR. Results show that the image can be compressed greatly and the original image can be recovered well. In addition
the approach can be realized easily by hardware.