Control of Color Imaging Systems: Analysis and Design by Lalit K. Mestha, Sohail A. Dianat

By Lalit K. Mestha, Sohail A. Dianat

An entire One-Stop source whereas electronic colour is now the expertise of selection for printers, the data required to handle the standard and productiveness problems with those units is scattered throughout a number of applied sciences, as is its assisting literature. Bringing jointly details from varied fields, keep watch over of colour Imaging structures: research and layout is the 1st ebook to supply entire assurance of the basics and algorithms of the varied disciplines linked to electronic colour printing in one source. The authors evaluation the historical past of electronic printing structures, discover its present prestige, and clarify basic innovations, together with: electronic picture formation, sampling, quantization, photo coding, spot colour calibration, and one- and multi-dimensional tone regulate of colour administration platforms — together with method physics and controls. a whole Self-Tutorial With Over a hundred and fifty layout Examples and one hundred twenty workout difficulties in accordance with the authors’ 3 many years of hands-on technical and educating adventure, the textual content offers engineers and technicians with an end-to-end realizing of the colour printing technique, and is helping them construct a beginning drawn from the various disciplines had to deal with and keep an eye on electronic construction printers. The regulate idea and techniques provided during this publication are state-of-the artwork for colour printing platforms; although, insurance of theoretical options and arithmetic are saved to the fundamentals, because the e-book is designed to educate hand’s on abilities that would let practitioners to realize a right away realizing of caliber and productiveness matters. the knowledge supplied can help practitioners construct the technical abilities had to aid pioneer the subsequent iteration of rules, algorithms, and strategies that would extra extend the frontier of this speedily evolving expertise.

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The digitized image is obtained by sampling the continuous tone image on a discrete grid and quantizing the sample values using a finite number of bits. To understand the process of image sampling, we need to revisit the 2-D sampling theorem [3,5]. Assume that we have a band-limited 2-D signal (such as an image). Real-world images are not truly band limited; however, they can be approximated by bandlimited functions. 6. 6 Region defining a band-limited signal. s(x, y) Δx x Δy …. …. …. 7 Sampling function s(x, y).

12a by a factor of 4 and then upsample it to the original size without using any anti-aliasing filter. 12b. 12 (a) Original LENA Image (b) aliased LENA Image. 2 IMAGE QUANTIZATION Once the signal has been sampled (discretized), the amplitude of the sampled values is quantized (digitized). A quantizer is a many-to-one mapping that maps a range of input values into a single output value. There are two ways to quantize a signal: scalar quantization (SQ), where each signal sample is individually quantized, and vector quantization (VQ), where a block of signal samples is jointly quantized.

In addition to the fundamental knowledge in image processing and image transforms, mathematical tools for the analysis and design of open- and closed-loop control systems are required to optimize an internal press control system. Therefore, Chapters 3 through 5 provide a strong mathematical foundation to design modern multivariable discrete control systems, which are required for improving the press stability using process actuators. Chapter 6 describes the multidimensional interpolation and smoothing=filtering techniques useful for generating inverse maps.

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