Results 91 to 100 of about 12,056,236 (247)

Semantically-Guided Image Compression for Enhanced Perceptual Quality at Extremely Low Bitrates

IEEE Access
Image compression methods based on machine learning have achieved high rate-distortion performance. However, the reconstructions they produce suffer from blurring at extremely low bitrates (below 0.1 bpp), resulting in low perceptual quality.
Shoma Iwai, Tomo Miyazaki, Shinichiro Omachi   +2 more
doaj   +1 more source

A joint motion & disparity motion estimation technique for 3D integral video compression using evolutionary strategy [PDF]

, 2007
3D imaging techniques have the potential to establish a future mass-market in the fields of entertainment and communications. Integral imaging, which can capture true 3D color images with only one camera, has been seen as the right technology to offer ...
Adedoyin, S, W. A. C. Fern, Fernando, WAC, S. Adedoyin, Aggoun, A, A. Aggoun   +5 more
core   +1 more source

Heterotropic regulation and negative homotropic cooperativity

FEBS Open Bio, EarlyView.
We identified a structural module common to some proteins that couple negative cooperativity with heterotropic regulation, two features that rarely coexist. These proteins are ring‐like and present an ordered asymmetry whereby noncontacting subunits are symmetric, and their tertiary structure differs from that of contacting subunits.
Veronica Morea, Francesco Angelucci, Federica Arnesano, Gianmarco Pascarella, Patrizio Di Micco, Andrea Bellelli   +5 more
wiley   +1 more source

Experimental study of locally loaded timber in compression perpendicular to the grain [PDF]

, 2011
Since the test method for compression strength perpendicular to the grain was changed from a partial area to a full area loading test, strength values for softwood in EN 338 were significantly reduced.
Louis-Etienne Denaud, MARCHAL, Rémy, Robert Collet, DENAUD, Louis, Laurent Bleron, Rémy Marchal, BLERON, Laurent, COLLET, Robert   +7 more
core   +1 more source

GelMA‐based 3D spheroids recapitulate transcriptomic and functional hallmarks of myeloid sarcoma

FEBS Open Bio, EarlyView.
GelMA 5% hydrogels support the formation of myeloid leukemia spheroids that recapitulate MS‐specific features, including G1 arrest, apoptosis, and ECM‐driven transcriptomic reprogramming. The 3D model mimicked soft‐tissue‐like stiffness and oxygen conditions, and transcriptomic convergence with primary MS samples confirmed its utility as a preclinical ...
Nicolas Germain, Elise Buret, Le Hoang Thanh Nguyen, Marion Cocheteux, Nicolas Touya, Mélanie Dhayer, Romain Dubois, Frank Lafont, Sebastien Janel, Patrice Maboudou, Steve Lancel, Philippe Marchetti   +11 more
wiley   +1 more source

A Contour-Based Approach to Image Compression

, 2011
This paper presents an alternative spatial image compression method that can be directly applied to compressing certain classes of grey-scale and/or colour (RGB, 24 bits) imagery of any size.
Gabriel Scarmana, Scarmana, Gabriel
core   +1 more source

Structural and biochemical insights into the thermostable esterase Ta0887 from Thermoplasma acidophilum

FEBS Open Bio, EarlyView.
In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey, Miriam Livier Llamas‐García, Gabriela M. Montero‐Morán, Leticia Santos, Samuel Lara‐González   +4 more
wiley   +1 more source

THE PROBLEM OF CONTOURS IN TRANSFORM IMAGE CODING [PDF]

, 2008
Object contours contribute to a large extent to the perceived quality of an image but are typically quite hard to compress. As a matter of facts, many coding algorithms fail to describe efficiently this information.
Parrilli, Sara
core   +1 more source

Image compression encryption and reversible destruction algorithm based on chaotic sequence or periodic sequence

Ain Shams Engineering Journal
Aiming at the problem that it is difficult to realize the coexistence of encryption and compression for image data, and the potential risk of illegal access and data theft is difficult to detect, this paper proposes an image encryption-compression ...
Qi Liang, Jia Duan, XinJie Hu, Wenxin Yu
doaj   +1 more source

IGF2 knockout reduces but does not abolish osteosarcoma growth in vitro and in vivo

FEBS Open Bio, EarlyView.
To test whether endogenous IGF2 promotes osteosarcoma growth, IGF2 was knocked out in Saos2 cells via CRISPR‐Cas9. KO cells showed reduced proliferation in vitro, and knockout xenografts in mice reached only ~25% of wild‐type tumor volume. Insulin‐like growth factor 2 (IGF2) is implicated in osteosarcoma, but direct functional evidence of its role is ...
Shun Yao, Marco Archetti
wiley   +1 more source