Now showing items 481-500 of 990

    • GOES advanced sounder design study 

      Bicknell, William; Kerekes, John; Ryan-Howard, Danette (The International Society for Optical Engineering (SPIE), 1996-08-07)
      Interim results of a current study on upgrading the geosynchronous operational environmental Satellite (GOES) infrared (IR) sounder are presented. Considered are a 15 cm diameter telescope to reduce instrument size and ...
    • Spectral quality requirements for effluent quantification 

      Czerwinski, Richard; Farrar, Kristine; Griffin, Michael; Kerekes, John (The International Society for Optical Engineering (SPIE), 2004-08)
      Based on simulated atmospheric and sensor effects, we identify spectral resolution and per-channel signal-to-noise ratio (SNR) requirements for thermal infrared spectrometers that allow effluent quantification to any ...
    • Image quality scaling of electrophotographic prints 

      Johnson, Garrett; Patil, Rohit; Montag, Ethan; Fairchild, Mark (The International Society for Optical Engineering (SPIE) & The Society for Imaging Science and Technology (IS&T), 2004-01-18)
      Two psychophysical experiments were performed scaling overall image quality of black-and-white electrophotographic (EP) images. Six different printers were used to generate the images. There were six different scenes ...
    • Photography: Making every photon count 

      Hailstone, Richard (Nature Publishing Group, 1999-12-23)
      More than 150 years after the invention of photography, the underlying solid-state photochemistry is still being investigated and improved. One aspect of continual importance is the efficiency of the image-recording stage, ...
    • Predicting the image quality of color overhead transparencies using a color-appearance model 

      Tanaka, Toru; Berns, Roy; Fairchild, Mark (The International Society for Optical Engineering (SPIE) & The Society for Imaging Science & Technology (IS&T), 1997-04-01)
      The color-image quality of color overhead transparencies depends on properties of the imaging system used to create the transparency and illuminating and viewing conditions of the transparency such as the projector's ...
    • Spectral reproduction from scene to hardcopy: I. Input and output 

      Imai, Francisco; Rosen, Mitchell; Wyble, David; Berns, Roy (The International Society for Optical Engineering (SPIE), 2001-05)
      Efforts to construct end-to-end color reproduction systems based on the preservation of scene spectral data have been underway at the Munsell Color Science Laboratory (MCSL). The goal is to present hardcopy results which ...
    • Analysis of spectrophotometer specular performance using goniometric information 

      Wyble, David (The International Society for Optical Engineering (SPIE), 2003-07)
      The 1986 Cifi document 15.2, Colorimetry, was necessarily broad in specifying the use of the gloss trap or specular port in integrating sphere measurements. This has led to a variety of spectrophotometer configurations ...
    • The effect of DLP projector white channel on perceptual gamut 

      Heckaman, Rodney; Fairchild, Mark; Wyble, David (Society for Imaging Science and Technology (IS&T), 2005-11)
      The effect of white channel enhancement as implemented in the Texas Instrument DLP digital projector technology is evaluated theoretically using both the CIELAB and the CIECAM02 color appearance models and experimentally ...
    • A critical review of spectral models applied to binary color printing 

      Wyble, David; Berns, Roy (John Wiley & Sons, 2000-02)
      A critical review of binary color printing models is presented. The goal is to provide an understanding of the application of color printer models as a component for device profiles within a color management system. A short ...
    • Prediction of Munsell appearance scales using various color appearance models 

      Wyble, David; Fairchild, Mark (John Wiley & Sons, 2000-02-07)
      The chromaticities of the Munsell Renotation Dataset were applied to eight color-appearance models. Models used were: CIELAB, Hunt, Nayatani, RLAB, LLAB, CIECAM97s, ZLAB, and IPT. Models were used to predict three appearance ...
    • Color management of four-primary digital light processing projectors 

      Wyble, David; Rosen, Mitchell (The Society for Imaging Science and Technology (IS&T), 2006-01)
      Traditionally, hardware for additive color displays, including projection devices, has been built from a set of only three prima-ries: a red, a green, and a blue. Recently, some manufacturers of projector displays have ...
    • Evaluation of methods for verifying the performance of color-measuring instruments. Part II: Inter-instrument reproducibility 

      Wyble, David; Rich, Danny (2007-07-05)
      Part I of this series of papers described the recent ASTM specification, E2214-02 Standard Practice for Specifying and Verifying the Performance of Color-Measuring Instruments, . E2214 is intended to standardize the ...
    • Evaluation of methods for verifying the performance of color-measuring instruments. Part I: Repeatability 

      Wyble, David; Rich, Danny (2007-07-05)
      A recent ASTM specification, E2214-02 Standard Practice for Specifying and Verifying the Performance of Color-Measuring Instruments, was created to standardize the terminology and procedures used to evaluate color measuring ...
    • Seasonal seawater optical properties of the U.S. Middle Atlantic Bight 

      DeGrandpre, Michael; Vodacek, Anthony; Nelson, Robert; Bruce, E.; Blough, Neil (American Geophysical Union, 1996)
      Optical properties of seawater on the U.S. Middle Atlantic Bight (MAB) were measured during four cruises spanning 1993-1994. Samples were collected in August and November 1993 and March and April 1994 along a cruise track ...
    • Fire temperature retrieval using constrained spectral unmixing and emissivity estimation 

      Ononye, Ambrose; Vodacek, Anthony; Kremens, Robert (The International Society for Optical Engineering (SPIE), 2005-06)
      Accurate retrieval of wildland fire temperature from remote imagery would be useful in improving prediction of fire propagation and estimates of fire effects such as burn severity and gas and particle production. The ...
    • A new algorithm for global forest fire detection using multispectral images 

      Li, Ying; Vodacek, Anthony; Kremens, Robert; Ononye, Ambrose (The International Society for Optical Engineering (SPIE), 2003-09)
      Fire detection has been an active research field for many years and a number of algorithms have been proposed. These algorithms, however, are often inflexible in dealing with the spatial and temporal heterogeneity of ...
    • Inherent optical properties of the ocean: retrieval of the absorption coefficient of chromophoric dissolved organic matter from airborne laser spectral fluorescence measurements 

      Hoge, Frank; Vodacek, Anthony; Swift, Robert; Yungel, James; Blough, Neil (Optical Society of America, 1995-10)
      The absorption coefficient of chromophoric dissolved organic matter (CDOM) at 355 nm has been retrieved from airborne laser-induced and water Raman-normalized CDOM fluorescence. Four combined airborne and ship field ...
    • Metallo 2,3-Disulfidothienoquinoxaline, 2,3-Disulfidothienopyridine, and 2-Sulfido-3-oxidothienoquinoxaline complexes: synthesis and characterization 

      Kaiwar, Sharada; Hsu, John; Vodacek, Anthony; Yap, Glenn; Liable-Sands, Louise; Rheingold, Arnold; Pilato, Robert (American Chemical Society (ACS), 1997-05-21)
      The 2,3-disulfidothienoquinoxaline complexes of Cp2Mo and dppePd and the 2,3-disulfidothienopyridine complexes of Cp2Mo were obtained as products from the S8 oxidation of the corresponding metallo-1,2-enedithiolate complexes. ...
    • Seasonal variation of CDOM in the Middle Atlantic Bight: terrestrial inputs and photooxidation 

      Vodacek, Anthony; Blough, Neil (The International Society for Optical Engineering (SPIE), 1997-02)
      Surveys of the fluorescence and absorption of chromophore-containing dissolved organic matter (CDOM) were made along a cruise line extending from the mouth of Delaware Bay southeast to the Sargasso Sea. With shallow ...
    • Raman scattering by pure water and seawater 

      Bartlett, Jasmine; Voss, Kenneth; Sathyendranath, Shubha; Vodacek, Anthony (The Optical Society of America (OSA), 1998-05-20)
      Measurements of the magnitude and spectral distribution of the Raman-scattering coefficients of pure water ( b rw ) and seawater ( b rs ) are presented. Two independent measurements of the spectral distribution of the ...