Improving a DWT-based compression algorithm for high image-quality requirement of satellite images

2011 ◽  
Author(s):  
Carole Thiebaut ◽  
Christophe Latry ◽  
Roberto Camarero ◽  
Grégory Cazanave
Keyword(s):  
Image Quality ◽  
Satellite Images ◽  
Compression Algorithm ◽  
Quality Requirement ◽  
High Image Quality

Progress In The Practical Application Of Automated Image Analysis To Tem Negatives

1977 ◽  
Vol 35 ◽  
pp. 214-217
Author(s):  
F. A. Heckman ◽  
E. Redman ◽  
J.E. Connolly
Keyword(s):  
Image Analysis ◽  
Image Quality ◽  
Exposure Time ◽  
Image Contrast ◽  
Automated Image Analysis ◽  
Practical Application ◽  
Factors Affecting ◽  
High Image Quality ◽  
Qualitative Evidence ◽  
Comprehensive Study

In our initial publication on this subject1) we reported results demonstrating that contrast is the most important factor in producing the high image quality required for reliable image analysis. We also listed the factors which enhance contrast in order of the experimentally determined magnitude of their effect. The two most powerful factors affecting image contrast attainable with sheet film are beam intensity and KV. At that time we had only qualitative evidence for the ranking of enhancing factors. Later we carried out the densitometric measurements which led to the results outlined below.Meaningful evaluations of the cause-effect relationships among the considerable number of variables in preparing EM negatives depend on doing things in a systematic way, varying only one parameter at a time. Unless otherwise noted, we adhered to the following procedure evolved during our comprehensive study:Philips EM-300; 30μ objective aperature; magnification 7000- 12000X, exposure time 1 second, anti-contamination device operating.

High image quality type-II superlattice detector for 3.3 μm detection of volatile organic compounds

2015 ◽  
Vol 70 ◽  
pp. 34-39 ◽  
Author(s):  
Hedda Malm ◽  
Anders Gamfeldt ◽  
Rickard Marcks von Würtemberg ◽  
Dan Lantz ◽  
Carl Asplund ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Image Quality ◽  
Organic Compounds ◽  
Type Ii ◽  
High Image Quality ◽  
Type Ii Superlattice ◽  
Volatile Organic ◽  
Quality Type

scholarly journals Improving Fractal Image Compression Scheme through Quantization Operation

2007 ◽  
Vol 4 (2) ◽  
pp. 330-337
Author(s):  
Baghdad Science Journal
Keyword(s):  
Image Quality ◽  
Image Compression ◽  
New Method ◽  
Compression Scheme ◽  
Fractal Image Compression ◽  
High Image Quality ◽  
Fractal Image ◽  
Separate Step ◽  
Transform Coefficients

We explore the transform coefficients of fractal and exploit new method to improve the compression capabilities of these schemes. In most of the standard encoder/ decoder systems the quantization/ de-quantization managed as a separate step, here we introduce new way (method) to work (managed) simultaneously. Additional compression is achieved by this method with high image quality as you will see later.

Achievement of high image quality MCT sensors with Sofradir vertical industrial model

2018 ◽  
Author(s):  
Laurent Rubaldo ◽  
Pierre Guinedor ◽  
Alexandre Brunner ◽  
Paul Fougères ◽  
Armelle Kapferer ◽  
...  
Keyword(s):  
Image Quality ◽  
High Image Quality

Novel irradiation side sampling system flexible flat panel detectors with high image quality and light weight

2020 ◽  
Author(s):  
Shinichi Ushikura ◽  
Tatsunori Tanimoto ◽  
Munetaka Kato ◽  
Takashi Tajima ◽  
Hisao Fujiwara ◽  
...  
Keyword(s):  
Image Quality ◽  
Light Weight ◽  
Flat Panel ◽  
Sampling System ◽  
High Image Quality ◽  
Flat Panel Detectors

scholarly journals The objective assessment of the image quality based on the geometrical concentration

2020 ◽  
Vol 149 ◽  
pp. 02013
Author(s):  
Evgenii A. Maltsev ◽  
Yurii A. Maglinets ◽  
Ruslan V. Brezhnev
Keyword(s):  
Image Quality ◽  
Satellite Images ◽  
Objective Assessment ◽  
Objective Evaluation ◽  
Image Distortion

The method of the objective evaluation of the satellite images based on the calculation of the geometrical concentration using triangulation Delaunay is proposed. Such assessment allows to estimate the degree of the image distortion and can be used for indexing and filtration data in the satellite images catalogues.

18.2: MVA-LCD with Low Color Shift and High Image Quality

2007 ◽  
Vol 38 (1) ◽  
pp. 1007-1009 ◽  
Author(s):  
Meng-Chieh Tai ◽  
Ming-Hsuan Chang ◽  
Chih-Chung Liu ◽  
Yueh-Ping Chang ◽  
Ming-Tsung Wang
Keyword(s):  
Image Quality ◽  
High Image Quality ◽  
Color Shift
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