Nonlinear optical dynamic range compression with thin-film organic photorefractive material

2009 ◽  
Author(s):  
Bahareh Haji-saeed ◽  
Jed Khoury ◽  
Charles L. Woods ◽  
John Kierstead ◽  
Nasser Peyghambarian
Keyword(s):  
Thin Film ◽  
Nonlinear Optical ◽  
Dynamic Range ◽  
Dynamic Range Compression ◽  
Photorefractive Material

Implantable hearing interfaces

2018 ◽  
Author(s):  
Torsten Lehmann ◽  
André van Schaik
Keyword(s):  
Cochlear Implants ◽  
Neural Activity ◽  
Dynamic Range ◽  
Systems Design ◽  
Fundamental Operation ◽  
Profound Hearing Loss ◽  
Biomedical Implant ◽  
Dynamic Range Compression ◽  
Hearing Function ◽  
Key Aspects

The chapter Implantable hearing interfaces describes the fundamental operation of a commonly available biohybrid system, the cochlear implant, or bionic ear. This neuro-stimulating biomedical implant is very successful in restoring hearing function to people with profound hearing loss. The fundamental operation of the biological cochlea is described and parallels are drawn between key aspects of the biological system and the biohybrid implementation: dynamic range compression, translation of sound to neural activity, and tonotopic mapping. Critical considerations are discussed for simultaneously meeting biological, surgical, and engineering restrictions in successful biohybrid systems design. Finally, challenges in present and future cochlear implants are outlined and directions of current research given.

A Modified Multi Scale Retinex with Color Restoration Algorithm for Automatic Enhancement of Landsat-5 Remote Sensing Image

2011 ◽  
Vol 341-342 ◽  
pp. 893-897
Author(s):  
Gui Zhou Wang ◽  
Guo Jin He
Keyword(s):  
Image Enhancement ◽  
Dynamic Range ◽  
Color Constancy ◽  
Human Perception ◽  
Histogram Equalization ◽  
Image Processing Algorithm ◽  
Multi Scale ◽  
Dynamic Range Compression ◽  
Restoration Algorithm ◽  
Color Restoration

The retinex is a human perception based image processing algorithm which provides color constancy and dynamic range compression. The multi scale retinex with color restoration (MSRCR) has shown itself to be a very versatile automatic image enhancement algorithm that simultaneously provides dynamic range compression, color constancy, and color rendition. But the MSRCR results suffer from lower global brightness and partial color distortion. In order to improve the MSRCR method, this paper presents a modified MSRCR algorithm to Landsat-5 image enhancement considering percent liner stretch and histogram adjustment. Finally, the effect of modified MSRCR method on Landsat-5 image enhancement is analyzed and the comparison with other color adjustment methods such as gamma correction and histogram equalization is reported in the experimental results.

Audio Dynamic Range Compression

2007 ◽  
pp. 199-221
Author(s):  
Mark Kolber ◽  
Daniel Lee
Keyword(s):  
Dynamic Range ◽  
Dynamic Range Compression

scholarly journals Dynamic Range Compression for Extrapolation of Image Morphing

2014 ◽  
Vol 80 (12) ◽  
pp. 1206-1212
Author(s):  
Yosuke NAGASAKA ◽  
Takuma FUNAHASHI ◽  
Hiroyasu KOSHIMIZU
Keyword(s):  
Dynamic Range ◽  
Image Morphing ◽  
Dynamic Range Compression

scholarly journals Nonlinear Optical Properties of ZnO Thin Film at Low Laser Intensity Using Z-Scan Technique

2021 ◽  
Vol 30 (4) ◽  
pp. 32-38
Author(s):  
Tharaa Sony ◽  
Thoalfiqar Zaker ◽  
Ammar Zakar ◽  
Hala Mohammed
Keyword(s):  
Thin Film ◽  
Optical Properties ◽  
Nonlinear Optical ◽  
Laser Intensity ◽  
Nonlinear Optical Properties ◽  
Zno Thin Film
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