The color and polyphenol oxidase (PPO) activity of fresh-cut Golden delicious apples were evaluated throughout cold storage under modified atmospheres. The shelf life of cut apples was extended to several weeks, especially when an initial atmosphere of 90.5% N(2) + 7% CO(2) + 2.5% O(2) and plastic pouches of 30 cm(3)/cm(2) x bar x 24 h were used. Under these conditions, a maximum 62% PPO activi...

The chromo-fluorogenic detection of carbon monoxide in air has been achieved using a simple, inexpensive system based on ruthenium(II). This probe shows exceptional sensitivity and selectivity in its sensing behavior in the solid state. A color response visible to the naked eye is observed at 5 ppb of CO, and a remarkably clear color change occurs from orange to yellow at the onset of toxic CO ...

9,10-Anthraquinone-based chemosensor 1 indicates the presence of Cu(II) ions among other transition metal ions with high selectivity by a color change from yellow to dark red. Chemosensor 2 shows binding toward Cu(II), Ni(II) and Co(II) with color changes from yellow to dark red, red and pale green, respectively. Especially, Co(II) binding with chemosensor 2 causes significantly green fluoresce...

(a) Maximum intensity projection (MIP) of the 200-µm-thick cortical microvascular stack obtained by TPM. Blood plasma was labeled by FITC. (b) Top-view projection of the segmented microvasculature with the intravascular PO 2 measurements obtained by TPM. Mean vascular segment PO 2 measurements were color-coded and overlaid on the segmented microvascular structure. (c) MIP of the OCT image of th...

We propose an algorithm for segmenting natural images based on texture and color information, which leverages the co-sparse analysis model for image segmentation within a convex multilabel optimization framework. As a key ingredient of this method, we introduce a novel textural similarity measure, which builds upon the co-sparse representation of image patches. We propose a Bayesian approach to...

Aims. The goal of this paper is to measure the dust content and distribution in the Large Magellanic Cloud (LMC) by comparing extinction maps produced in the near-infrared wavelengths and the spatial distribution of the neutral and molecular gas, as traced by H i and CO observations. Methods. In order to derive an extinction map of the LMC, we have developed a new method to measure the color ex...

We measured spatial resolution for discriminating targets that differed from nearby distractors in either color or orientation or their conjunction. In the fovea of normal human observers, whenever both attributes are big enough to be individually visible, their conjunction is also visible. In the periphery, the two attributes may be visible, but their conjunction may be invisible. We found a s...

We present a new robust approach to the detection of rail surface disruptions in high-resolution images by means of 2/2D image analysis. The detection results are used to determine the condition of rails as a precaution to avoid breaks and further damage. Images of rails are taken with color line scan cameras at high resolution of about 0.2 millimeters under specific illumination to enable 2/2D...

In order to provide multimedia (e.g. image/video) retrieval capabilities, digital libraries have depended on manual annotation of images. Providing a way to perform annotation automatically would be more useful, efficient and scalable with expanding image collections. In this paper, we study the Co-Occurrence Model [2] where, by training on a set of images with given keywords, we can automatica...

This paper presents the integration of color histogram and DBC co-occurrence matrix for content based image retrieval. The exit DBC collect the directional edges which are calculated by applying the first-order derivatives in 0o, 45o, 90o and 135o directions. The feature vector length of DBC for a particular direction is 512 which are more for image retrieval. To avoid this problem, we collect ...