6533b7d9fe1ef96bd126cbff
RESEARCH PRODUCT
Rank-order and morphological enhancement of image details with an optoelectronic processor.
Carlos FerreiraJavier GarciaTomasz Szopliksubject
Normalization (statistics)Point spread functionComputer sciencebusiness.industryMaterials Science (miscellaneous)Binary imageTop-hat transformImage processingAstrophysics::Cosmology and Extragalactic AstrophysicsFilter (signal processing)Edge enhancementIndustrial and Manufacturing EngineeringOptical transfer functionOptoelectronicsBusiness and International ManagementbusinessClosing (morphology)OpeningUnsharp maskingdescription
In all-optical processors, enhancement of image details is the result of high-pass filtering. We describe an optoelectronic processor in which detail enhancement results from the digitally calculated difference between an original input image and its low-pass filtered version. The low-pass filtering is realized through the rank-order median and the morphological opening and closing operations calculated by use of the optical convolver. It is shown that the normalized difference between the morphological white and black top hats enhances bright and dark image details analogously to the rank-order unsharp masking.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-10-22 | Applied optics |