Methods of window matching to estimate 3D points are the most serious factors affecting the accuracy, robustness, and computational cost of Multi-View Stereo (MVS) algorithms. Most existing MVS algorithms employ window matching based on Normalized CrossCorrelation (NCC) to estimate the depth of a 3D point. NCC-based window matching estimates the displacement between matching windows with sub-pi...

The matching accuracy of homonymy points of stereo images is a key point in the development of photogrammetry, which influences the geometrical accuracy of the image products. This paper presents a novel sub-pixel matching method phase correlation using peak calculation to improve the matching accuracy. The peak theoretic centre that means to sub-pixel deviation can be acquired by Peak Calculat...

Blood smears from four persons were photographed at 400x magnification; one person had normal cells (NC), one had microcytic hypochromic (MH) anemia, one had sickle cell (SC) anemia and one had hereditary spherocytosis (HS). The photomicrographs were transferred to computer media as 8-bit greyscale image files using a slide digitizer. The images were further manipulated using an image processin...

This paper presents an alternative approach to the image segmentation problem. Similar to other recent proposals a graph theoretic framework is used: Given an image a weighted undirected graph is constructed, where each pixel becomes a vertex of the graph and edges measure a relationship between pixels. Our approach differs from previous work in the way we define the edge weights. Typically the...

A common approach to pre-launch absolute spectral flux calibration of an instrument is to break the problem into two parts [1]. In the first part, the relative spectral responsivity (RSR) is determined in the laboratory, often by tuning a quasi-monochromatic source across the bandpass of the instrument. The result from this first part is a spectrum (for each pixel and each band) normalized at s...

The scaling effect correction of retrieved parameters is an essential and difficult issue in analysis and application of remote sensing information. Based on fractal theory, this paper developed a scaling transfer model to correct the scaling effect of the leaf area index (LAI) estimated from coarse spatial resolution image. As the key parameter of the proposed model, the information fractal di...

Monitoring and tracking vegetation changes in vast and remote areas is a difficult task. Accurate extraction of existing vegetation is the primary step for better statistical assessment. An approach for vegetation mapping is proposed which automatically explores spectral characteristics of connected components in an image. Different frames of multi-spectral Indian Remote sensing IRS-1C LISS III...

AI161380 0 Transcribed sequence with weak similarity to protein sp:P39188 (H.sapiens) ALU1_HUMAN Alu subfamily J sequence contamination warning entry

This paper describes the development and application of a novel supervised segmentation technique used for conservation documentation based on visible appearance changes Cultural Heritage (CH) metal surfaces. The is employing linear discriminant analysis model to classify Reflectance Transformation Imaging (RTI) reconstruction coefficients. Hemispherical Harmonics (HSH) coefficients each pixel ...