نتایج جستجو برای: gray levels
تعداد نتایج: 955597 فیلتر نتایج به سال:
A scanned, complex document image may be composed of text, graphics, halftones, and pictures, whose layout is unknown. In this paper, we propose a novel segmentation scheme for scanned document images that facilitates their efficient compression. Our scheme segments an input image into binarizable components and non-binarizable components. By a binarizable component we mean that the region can ...
Having implemented discrete stationary wavelet transform (DSWT) to an image, combining generalized cross validation (GCV), noise is reduced directly in the high frequency sub-bands which are at the better resolution levels and local contrast is enhanced by combining de-noising method with in-complete Beta transform (IBT) in the high frequency sub-bands which are at the worse resolution levels. ...
We estimated general and specific combining abilities and examined resistance to northern leaf blight (Exserohilum turcicum) and to gray leaf spot (Cercospora zeae-maydis) in a set of nine inbred popcorn lines. These inbreds were crossed in a complete diallel scheme without reciprocals, which produced 36 F(1) hybrids. Two experiments with a square lattice design and three replications were cond...
In the literature, several worksfocal point on description of contrast metrics and standards that allow to count overall an image processing algorithm performance. These assessment can be investigated outline new photo algorithms by way optimizing them. this work, we suggest a universal scheme phasephotographswith aid genetic algorithm. The developed approach makes use estimation standard which...
We propose a method for segmenting gray-value images. By segmentation, we mean a map from the set of pixels to a small set of levels such that each connected component of the set of pixels with the same level forms a relatively large and “meaningful” region. The method finds a set of levels with associated gray values by first finding junctions in the image and then seeking a minimum set of thr...
BACKGROUND Jaw bone quality plays an essential role in treatment planning and prognosis of dental implants. Regarding several available methods for bone density measurements, they are not routinely used before implant surgery due to hard accessibility. OBJECTIVE An in vitro investigation of correlation between average gray scale in direct digital radiographs and Hounsfield units in CT-Scan pr...
When identifying a writer from a handwritten text, most often, either some characteristic patterns or some shape parameters are extracted. They are assumed to be specific of the writer. Here, we are to explore a different approach, we consider the distribution of the pixel gray levels within the line. It is linked to pressure and writing speed when text is realized. In the line, the direction t...
To improve the quality of digital images captured in low light environment from consumer electronics devices like cell phone cameras, Modified Dynamic Histogram Equalization (MDHE) is proposed. Initially, the proposed method divides the histogram into two sub-histograms based on median. Then 2 subhistogram is further divided into two sub-histograms based on median of it. The resultant sub-histo...
The body of work on multi-body factorization separates between objects whose motions are independent. In this work we show that in many cases objects moving with different 3D motions will be captured as a single object using these approaches. We analyze what causes these degeneracies between objects and suggest an approach for overcoming some of them. We further show that in the case of multipl...
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