This paper investigates the system of LCD monitor and TV signal processor. It is shown that the processor provides scalar, brightness and contrast adjuster, Gamma correction and dithering. The algorithms are discussed and implemented by Verilog hardware description language. The key hard codes are displayed. The signal processor for monitor and TV achieves real-time and high performance. The sy...

This paper advocates the use of overlapping bins in histogram creation. It is shown how conventional histogram creation has an inherent quantisation that cause errors much like those in sampling with insufficient band limitation. The use of overlapping bins is shown to be the deterministic equivalent to dithering. Two applications of soft histograms are shown: Improved peak localisation in an e...

Many applications require that nodes be scattered locally quasi-uniformly within 2-D regions or on curved surfaces in 3-D space, while obeying some prescribed spatially varying density function. This study focuses on creating variable density node layouts that are suitable for meshfree discretizations of PDEs. Another application is ‘dithering’ to simulate half-tone images. The method is an ’ad...

Ordered dither is considered to be a simple and effective method among all halftoning techniques. In this paper, compaction of ordered dithered images using arithmetic coding is studied. A preprocessor referred to as pixel interleaving (i.e., grouping pixels with similar dithering thresholds) is employed in such a way that dithered images can be efficiently coded with the JBIG1 code and high co...

watermarking, halftone printing, printing security, dithering This report concerns embedding of watermarks into dither halftoning. The basic idea is to use a sequence of two dither matrices (instead of one) to encode the watermark. Assuming a specific distribution of the input image leads to an optimal decoding algorithm, and an optimal dither matrix pair matching. Finally, an example is given,...

We develop a compensation method for continuous-time delta–sigma modulators valid for loop filters of arbitrary order. Our approach, based on variable-structure theory, accommodates multilevel quantization and dithering. Stability is rigorously proved under the assumption of infinite sampling rate and is accompanied by an analytic characterization of performance. A slight modification of the ba...