The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This study describes the improved calibration applied for VIIRS SDR reprocessing. At reflective solar bands (RSBs), the earth-view F-factor is adjusted with the lunar observations and changes about 2% in band M2-M4 in past five years. An empirical method is applied to remove the radiance spikes in VIIRS thermal emissive bands (TEBs) during the blackbody Warm-Up-Cool-Down (WUCD). VIIRS DNB calibration...
There always exists an intractable challenge in three-dimensional (3D) object surface measurement that it is difficult to deal with the scene with a large range reflectivity or specular reflection. This paper presents a novel 3D measurement technique: high dynamic range saturation intelligence avoidance (HDRSIA), which is based on the multi-exposure principle. This method divides the object surface...
An adaptive model update mechanism for mean shift tracking is proposed in this paper. Gaussian Model always has been used in background model estimation to realize object tracking. It is novel that each bins of kernel histogram is modeled as mixture of Gaussian and the on-line approximation used to update the model. Gaussian distributions are ordered based on the fitness value of weight and covariance...
This paper, guided by Statistical Color Models, proposes a real-time Adult Video detector to filter the adult content in the video. A generic color model is constructed by statistical analysis of the sample images containing adult pixels. We fully utilize the video continuity characteristics, i.e. preceding and following N frames considered in the classification. Our method, through experimental,...
Leaf color has been commonly used as an index for crop stress status diagnosis. We have developed a low-cost and non-destructive method that is easy to use to assess the health status of plants, based on the estimation of chlorophyll content of leaves using a portable digital camera. Relationships between chlorophyll content and leaf image color indices in the RGB and Lab* space with the comparison...
An algorithm for eggplant image is brought forward by merging the G-B color factor and spatial information. In order to find the optimum color space and color mode for image segmentation, the grayscale and histogram of 40 picture under different light intensities are extracted. The characters of their fruits, leaves, stems and void are studied and the G-B color mode is most available to segment the...
Regions of interest extraction in an image is a useful and challenging problem in image processing and analysis. A new method to extract regions of interest based on phase spectrum and morphological approach is proposed in this paper. Different color feature maps (hue, saturation and intensity) in different scales are selected to analyze the saliency based on feature selection. The phase spectrum...
Driving is a complex man-machine process, color signal is an important factor for affecting driving fatigue. In the course of driving simulation, using different color signals to stimulate the drivers, through subjective questionnaires and measuring the changes in drivers?? physiological parameters, to research the changing law of the drivers?? heart rate, respiratory rate and other physiological...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.