OBJECTIVE To validate a novel photographic portion guide as a tool to estimate consumption of fish and shrimp. Application of such a validated tool can facilitate accurate individual and community seafood intake assessments and provide meaningful data relative to health benefits and hazard assessment, particularly in response to environmental contamination and disasters. DESIGN A photographic...

Photographic plates used in electron microscopy must have a high resolving power. The resolving power of photographic plates is usually expressed by the maximum number of resolved lines in 1 mm. This method of expressing resolving power is not always adequate for electron microscopy, particularly when the resolution of small spots is treated. The present experiment was carried out to study the ...

We present a novel method for enhancing details in a digital photograph, inspired by the principle of art photography. In contrast to the previous methods that primarily rely on tone scaling, our technique provides a flexible tone transform model that consists of two operators: shifting and scaling. This model permits shifting of the tonal range in each image region to enable significant detail...