Results 151 to 160 of about 94,222 (181)

HDR tone mapping algorithm based on difference compression with adaptive reference values

Journal of Visual Communication and Image Representation, 2017
A new local tone mapping method using adaptive reference is proposed.The detailness metric is proposed to measure detail loss in bright and dark regions.An objective quality assessment is developed to optimize parameters.The proposed method shows a good balance between detailness and naturalness.
Chulhee Lee
exaly   +2 more sources

Lossless compression of continuous-tone images via context selection, quantization, and modeling

IEEE Transactions on Image Processing, 1997
Context modeling is an extensively studied paradigm for lossless compression of continuous-tone images. However, without careful algorithm design, high-order Markovian modeling of continuous-tone images is too expensive in both computational time and space to be practical.
exaly   +3 more sources

Separate Color Correction for Tone Compression in HDR Image Rendering

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2013
Sung-Hak Lee
exaly   +2 more sources

A new kind of HDR image tone compression algorithm

Proceedings 2013 International Conference on Mechatronic Sciences, Electric Engineering and Computer (MEC), 2013
null Lu Liang, null Yi Jie, null Bai Taotao, Ming Zhu   +3 more
exaly   +2 more sources

Effect of Perineal Compression on the Rectal Tone

Diseases of the Colon & Rectum, 2003
Digital pressure on the perineum was reported to result in an increase of the rectal tone. This effect has been related to a reflex action named perineorectal reflex but was not verified. The mechanism of action of perineal pressure on the rectal tone was studied.Eighteen healthy volunteers (mean age +/- standard deviation, 39.7 +/- 11.8 years; 10 ...
Ahmed, Shafik, Ismail, Ahmed, Olfat, El-Sibai   +2 more
openaire   +2 more sources

Compression of color images using a hologram of gray tones

SPIE Proceedings, 2007
A strategy for to compress color images in digital holograms of gray tones was developed. The procedure codifies the information of each channel of the RGB model in a system of fringes, it is a gray image denominated "hologram". The fringes in their intensity of gray tone carry the signal of the channel, in this manner the amplitude information for ...
Alejandro Restrepo Martinez, Roman Castañeda   +1 more
openaire   +1 more source

Discrimination of MP3-compressed musical instrument tones.

The Journal of the Acoustical Society of America, 2010
Eight musical instrument tones were compressed using an MP3 codec to determine how the detection of compressed sounds varies with bit-rate and instrument. Sounds with harmonically flattened frequencies were compressed with bit-rates of 32, 40, 48, 56, 64, 80, 96, 112, 128, and 160 kbps.
Lee, Chung, Horner, Andrew Brian
openaire   +1 more source

A generalized musical-tone generator with application to sound compression and synthesis

1997 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2002
A musical-tone generator based on physical modeling of sound production mechanisms is presented. For the purpose of making this scheme general for a wide class of musical instruments, the nonlinear part of the tone-generator is modeled by a neural network.
C. Drioli, ROCCHESSO, DAVIDE
openaire   +2 more sources

Evaluation of algorithms for lossless compression of continuous-tone images

Journal of Electronic Imaging, 2002
Lossless image compression algorithms for continuous- tone images have received a great deal of attention in recent years. However, reports on benchmarking their performance have been limited. In this paper, we present a comparative study of the follow- ing algorithms: UNIX compress, gzip, LZW, Group 3, Group 4, JBIG, old lossless JPEG, JPEG-LS based ...
openaire   +1 more source

A Proficient Algorithm for Compression and Storage of Two-Tone Image

Asian Journal of Computer Science and Technology, 2016
Since 1990s , there has be a swift, increase in computers, storage media and digital image taking devices, which enables a large number of digital information and store in computer readable formats. Image compression is an important issue in internet, mobile communication, digital library and other applications. Image compression refers to represent an
S. Selvam, S. Thabasu Kannan
openaire   +1 more source