We measure the sharpness of natural (complex) images using Gaussian models. We first locate lines and edges in the image. We apply Gaussian derivatives at different scales to the lines and edges. this yields a respons...
详细信息
To distinguish image features from high level noises, we propose to exploit the spatial correlations between wavelet coefficients by replacing the thresholding process with a diffusion process. the proposed smoothing ...
详细信息
In this paper, we present a compressed pattern matching method for searching user queried words in the CCITT Group 4 compressed document images, without decompressing. the feature pixels composed of black changing ele...
详细信息
Skewscope is a software module designed to detect and analyze skew information of textual document images. Its skew detection algorithm, which is the major topic of this paper, directly computes the slopes of all uniq...
the generalised Radon transform is a well-known tool for detecting parameterised shapes in an image. Applying the Radon transform to an image results in a parameter response function (PRF). Curves in the image become ...
详细信息
this article presents a database of images of handwritten city names. the aim is to provide a standard database for Sinhala handwriting recognition research. this database contains about 15,000 images of about 500 cit...
详细信息
Image warping is a common problem when one scans or photocopies a document page from a thick bound volume, resulting in shading and curved text lines in the spine area of the bound volume. this will not only impair re...
In this paper we propose a parallel approach for the Kmeans Vector Quantization (VQ) algorithm used in a twostage Hidden Markov Model (HMM)-based system for recognizing handwritten numeral strings. Withthis parallel ...
详细信息
A multi-scale, moving-window method for local thresholding based on Robust Automatic threshold Selection (RATS) is developed. Using a model for the noise response of the optimal edge detector in this context, the reli...
详细信息
A critical issue of applying Linear (or Fisher) Discriminant Analysis(LDA) is the singularity and instability of the within-class scatter matrix. In practice, particularly in image recognition applications such as fac...
详细信息
暂无评论