The goal of this study was to identify the factors that limit the survival of the red-eared slider turtle Trachemys scripta during long-term anoxic submergence at 3 C. We measured blood acid-base status and tissue lactate and glycogen contents after 13, 29, and 44 d of submergence from ventricle, liver, carapace (lactate only), and four skeletal muscles. We also measured plasma Ca , Mg , Na , K...

A multispectral system based on a monochrome camera and an adaptive illumination source is presented in this paper. Its preliminary application is focused on material discrimination for food and beverage industries, where monochrome, color and infrared imaging have been successfully applied for this task. This work proposes a different approach, in which the relevant wavelengths for the require...

Pictorial relief depends strongly on “cues” in the image. For isoluminant renderings some cues are missing, namely all information that is related to luminance contrast (e.g., shading, atmospheric perspective). It has been suggested that spatial discrimination and especially pictorial space suffer badly in isoluminant conditions. We have investigated the issue through quantitative measurement o...

In this study, segmentation of RGB images into two classes (soil and vegetation) is performed by unsupervised classification method based on the hierarchical analysis of 2D-histograms. The 2-D histogram is considered as a monochrome image. The approach we develop in the present paper is based on the classical waterfilling algorithm, which we will apply to monochrome image. We perform the segmen...

During the past year the Museum's collection of Islamic art has been greatly enriched by several important purchases, gifts, and bequests. The bequest of twenty ceramics and two Persian rugs by Horace Havemeyer has already been discussed in a separate Bulletin article (May I957). One of the most notable additions was the Cora Timken Burnett Bequest of Persian miniatures and other art objects, w...

Laser speckle imaging (LSI) is a noninvasive optical imaging technique able to provide wide-field two-dimensional maps of moving particles. Raw laser speckle images are typically taken with a scientific-grade monochrome camera. We demonstrate that a digital single-lens reflex (dSLR) camera with a Bayer filter is able to provide similar sensitivity despite taking information only from a specific...

Image segmentation is very essential and critical to image processing and pattern recognition This survey provides a summary of color image segmentation techniques available now Basically color segmentation ap proaches are based on monochrome segmentation approaches operating in di erent color spaces Therefore we rst discuss the major segmentation approaches for segmenting monochrome images his...

A color image sent to the monochrome device must undergo the color-to-grayscale conversion process. Although the conventional color-to-grayscale conversion algorithms are widely used, their performance is questionable in certain circumstances and poor quality resultant grayscale images will be produced. This paper tackled some drawbacks of the conventional methods by introducing a novel approac...