By Junichi Nakamura

ISBN-10: 0849335450

ISBN-13: 9780849335457

Shrinking pixel sizes in addition to advancements in photo sensors, optics, and electronics have increased DSCs to degrees of functionality that fit, and feature the capability to surpass, that of silver-halide movie cameras. picture Sensors and sign Processing for electronic nonetheless Cameras captures the present country of DSC snapshot acquisition and sign processing know-how and takes an all-inclusive examine the sphere, from the heritage of DSCs to destiny chances. the 1st bankruptcy outlines the evolution of DSCs, their easy constitution, and their significant program periods. the following few chapters speak about fine quality optics that meet the necessities of higher snapshot sensors, the fundamental capabilities and function parameters of snapshot sensors, and specified discussions of either CCD and CMOS picture sensors. The booklet then discusses how colour thought impacts the makes use of of DSCs, offers uncomplicated snapshot processing and digital camera regulate algorithms and examples of complex snapshot processing algorithms, explores the structure and required functionality of sign processing engines, and explains easy methods to evaluation snapshot caliber for every part defined. The ebook closes with a glance at destiny applied sciences and the demanding situations that has to be triumph over to achieve them. With contributions from many energetic DSC specialists, photo Sensors and snapshot Processing for electronic nonetheless Cameras bargains remarkable real-world insurance and opens vast the door for destiny innovation.

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Extra resources for Image sensors and signal processing for digital still cameras

Example text

6 Considerations of the Mass-Production Process in Design .............. 4 DSC Imaging Lens Zoom Types and Their Applications............................. 1 Video Zoom Type .............................................................................. 2 Multigroup Moving Zooms ............................................................... 3 Short Zooms....................................................................................... 5 Conclusion......................................................................................................

12. 12) Because the depth of focus D is directly proportional to the circle of least confusion d and the F-number, compact DSCs that have imaging elements with a short diagonal also have a small depth of focus. 1 shows specific examples of calculations for the depth of field and depth of focus in 35-mm film cameras and compact DSC cameras. 8 lens when converted to 35-mm film format. 8 mm. 8, the hyperfocal distance for the lens is roughly 2 m. In other words, by setting the focus to 2 m, an image can be obtained that is in focus from a distance of 1 m from the camera to infinity, enabling the camera to be used in what is virtually pan-focus mode.

Usually, this conversion is performed to more than 8-b accuracy — say, 12 or 14 b — to prepare for subsequent digital processing. 5 DIGITAL CIRCUIT The output signals of the A/D converter are processed by the digital circuits, usually digital signal processors (DSPs) and/or microprocessors. Various processing is applied, such as tone adjustment; RGB to YCC color conversion; white balance; and image compression/decompression. Image signals to be used for automatic exposure control (AE), auto focus (AF), and automatic white balance (AWB) are also generated in these digital circuits.

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Image sensors and signal processing for digital still cameras by Junichi Nakamura


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