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Topic: Digital image processing

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In the News (Sat 23 Mar 19)

  Recommendations and Guidelines for the Use of Digital Image Processing in the Criminal Justice System, Forensic ...
Digital image processing is an accepted practice in forensic science.
Image restoration is any process applied to an image that has been degraded by a known cause (e.g., defocus or motion blur) to partially or totally remove the effects of that degradation.
Image processing does not mean that the input image is overwritten during the process.
www.fbi.gov /hq/lab/fsc/backissu/jan2003/swgitdigital.htm   (4183 words)

  Olympus Microscopy Resource Center: Digital Image Processing Interactive Java Tutorials
Digital images having higher gray-level resolution are composed with a larger number of gray shades and have a greater dynamic range than those of lower gray-level resolution.
Image Averaging and Noise Removal - Random noise is a problem that often arises in fluorescence microscopy due to the extremely low light levels experienced with this technique, and its presence can seriously degrade the spatial resolution of a digital image.
Median Filters for Digital Images - The median filter is an algorithm that is useful for the removal of impulse noise (also known as binary noise), which is manifested in a digital image by corruption of the captured image with bright and dark pixels that appear randomly throughout the spatial distribution.
www.olympusmicro.com /primer/digitalimaging/javaindex.html   (2526 words)

 Olympus MIC-D: Digital Image Capture and Processing
The result is often images that are severely degraded and compromised with respect to their potential, based on the power and versatility of the software utilized in the digital processing.
A lack of sharpness in digital images captured with the microscope often results from poor focus adjustment, vibration, or the specimen not being flat with respect to the imaging plane.
Zooming to enlarge image details is useful for the visualization of small structures present in a digital image, and scaling is often necessary to format a digital image to fit within the boundaries of a display medium, as in the case of displaying a collection of thumbnail images.
www.olympusmicro.com /micd/imageprocessing/index.html   (1986 words)

 Powell's Books - Digital Image Processing 2ND Edition by Rafael Gonzalez
The leader in the field for more than twenty years, this introduction to basic concepts and methodologies for digital image processing continues its cutting-edge focus on contemporary developments in all mainstream areas of image processing.
As was the case with the 1977 and 1987 editions by Gonzalez and Wintz, and the 1992 edition by Gonzalez and Woods, the present edition was prepared with students and instructors in mind.
All mainstream areas of image processing are covered, including a totally revised introduction and discussion of image fundamentals, image enhancement in the spatial and frequency domains, restoration, color image processing, wavelets, image compression, morphology, segmentation, and image description.
www.powells.com /biblio?PID=24970&show=HARDCOVER:NEW:0201180758:132.00&PID=24970   (385 words)

 Ted's Photographics - The Science of Photography - Digital Image Processing
Digital imaging processes and traditional chemical methods are not mutually exclusive, they can be used together in a wide variety of combinations; and the principles of forming the image by light and lens are the same for chemical and digital processes.
The image capture process of a digital camera is almost instantaneous as all the sensors are exposed at the same time also the number of pixels is fixed, therefore the image captured has a fixed resolution.
The response of a digital image sensor to the colour spectrum does not match that of the human eye and filters have to be added, in addition to the colour separation filters, to reduce the sensor’s sensitivity to the near infrared end of the spectrum.
www.ted.photographer.org.uk /photoscience_digital.htm   (2473 words)

 Image interpretation & analysis - Digital Image Processing
Digital image processing may involve numerous procedures including formatting and correcting of the data, digital enhancement to facilitate better visual interpretation, or even automated classification of targets and features entirely by computer.
The objective of the second group of image processing functions grouped under the term of image enhancement, is solely to improve the appearance of the imagery to assist in visual interpretation and analysis.
Image classification and analysis operations are used to digitally identify and classify pixels in the data.
ccrs.nrcan.gc.ca /resource/tutor/fundam/chapter4/03_e.php   (754 words)

 Digital Image Processing and Beowulf
Digital image processing, no matter what it sounds like, is not related to prestidigitation and does not in other ways depend on sleight-of-hand.
Digital image processing cannot, however, adjudicate Zupitza's claim that the ascender is shine-through from an h on the opposite side of the leaf.
The value of digital image processing in the specific case of this manuscript is not that it suddenly reveals things not already visible in one way or another to palaeographers, but that it markedly improves the legibility of facsimiles for everyone else.
www.uky.edu /~kiernan/eBeowulf/ksk-llc.htm   (5471 words)

 digital image restoration
At the dawn of the 21st century, digital image processing is a highly advanced and multifaceted field.
Many disciplines benefit from it, from forensics and crime detection, saving lives on an operating table while a surgeon is viewing digitized images of what he is doing inside the body by remote control, to space exploration...
Image processing is basically what the name implies - manipulating images to help visualize that, which is not readily noticeable.
www.bradshaw.dk /pages/biro/digital_image_processing.html   (555 words)

 Digital image processing - Wikipedia, the free encyclopedia
Digital image processing is the use of computer algorithms to perform image processing on digital images.
Digital image processing has the same advantages (over analog image processing) as digital signal processing has (over analog signal processing) — it allows a much wider range of algorithms to be applied to the input data, and can avoid problems such as the build-up of noise and signal distortion during processing.
Many of the techniques of digital image processing, or digital picture processing as it was often called, were developed in the 1960s at the Jet Propulsion Laboratory, MIT, Bell Labs, University of Maryland, and a few other places, with application to satellite imagery, wirephoto standards conversion, medical imaging, videophone, character recognition, and photo enhancement.
en.wikipedia.org /wiki/Digital_image_processing   (590 words)

 Digital Image Processing   (Site not responding. Last check: 2007-09-15)
Digital images are tables of numbers, which in this case range from 0 to 255.
This image is an extreme closeup of a satellite image of West Hancock.
A color image is produced by loading a band of data into the red, green, and blue planes of the computor monitor.
www.geo.mtu.edu /rs/back/digital   (407 words)

 GameDev.net -- An Introduction To Digital Image Processing
First the issue of digital image processing appeared relatively late in computer history, it had to wait for the arrival of the first graphical operating systems to become a true matter.
Finally, digital image processing is by definition a two dimensions domain; this somehow complicates things when elaborating digital filters.
To obtain the image of a color by a grayscale transform, it must be applied to the three red, green and blue components separately and then reconstitute the final color.
www.gamedev.net /reference/programming/features/imageproc   (4457 words)

Image- processing is a technical specialty related to computer graphics and achine vision (Kennie and McLaren, 1988; Friedhoff and Benzon, 1991).
Digitizing the maps by semiautomated methods at 0.01 inches (0.25 mm) resolution, 3 arc-seconds or about 200 ft (63 m) on the ground, accounted for 1/6 of the approximately two billion elevations.
Digital shaded-relief maps also lack the distortion inherent in photographs and radar images, and they are free of the clouds, vegetation, and cultural features that mask topographic form on satellite images.
pubs.usgs.gov /bul/b2016/chapb/ch_b.html   (3866 words)

 Final Project: Digital Image Processing
The particular Landsat TM image which I used for this project was acquired in June; thus, the agricultural fields are almost all still bare.
Since the image is now in a certain map projection, it should line up perfectly with other projected layers of data, such as political boundaries, land use, soil types, road networks, drainage systems, etc. If the image was collected recently, the information could be used to update outdated GIS layers.
The characteristics of the TM image I used are summarized at the end of this section.
www.earthsensing.com /drs/stud_proj_f99/final.html   (3182 words)

 Amazon.ca: Digital Image Processing: Books: Rafael C. Gonzalez,Richard E. Woods   (Site not responding. Last check: 2007-09-15)
Completely self-contained and heavily illustrated, this introduction to basic concepts and methodologies for digital image processing is written at a level that truly is suitable for seniors and first-year graduate students in almost any technical discipline.
NEW - A broader overview of the spectrum of applications of digital image processing designed to give the reader a solid understanding of the areas in which image processing is utilized.
With many quality images and examples, there is much for the less mathematically inclined to cut their teeth on while brushing up on their advanced math skills.
www.amazon.ca /Digital-Image-Processing-Rafael-Gonzalez/dp/0201180758   (1247 words)

 Digital Imaging Tutorial - Basic Terminology
The digital image is sampled and mapped as a grid of dots or picture elements (pixels).
The binary digits ("bits") for each pixel are stored in a sequence by a computer and often reduced to a mathematical representation (compressed).
As shown in this bitonal image, each pixel is assigned a tonal value, in this example 0 for fl and 1 for white.
www.library.cornell.edu /preservation/tutorial/intro/intro-01.html   (123 words)

 EE368: Digital Image Processing
Digital image processing is ubiquitous, with applications ranging from television to tomography, from photography to printing, from robotics to remote sensing.
We expect to cover topics such as image acquistion and display, properties of the human visual system, color representations, sampling and quantization, point operations, linear image filtering and correlation, transforms and subband decompositions, and nonlinear filtering, contrast and color enhancement, dithering, and image restoration, image registration, and simple feature extraction and recognition tasks.
Image and Video Compression will be discussed in EE 398A/B. Lectures will be complemented by computer exercises where students develop their own image processing algorithms.
www.stanford.edu /class/ee368   (179 words)

 Amazon.ca: Digital Image Processing Using MATLAB(R): Books: Rafael C. Gonzalez,Richard E. Woods,Steven L. Eddins   (Site not responding. Last check: 2007-09-15)
A complementary objective was to prepare a book that is self-contained and easily readable by individuals with a basic background in digital image processing, mathematical analysis, and computer programming, all at a level typical of that found in a junior/senior curriculum in a technical discipline.
Digital Image Processing Using MATLAB is the first book that provides a balanced treatment of image processing fundamentals and the software principles used in their practical implementation.
This is important in image processing, where there is a need for extensive experimental work in order to arrive at acceptable problem solutions.
www.amazon.ca /Digital-Image-Processing-Using-MATLAB/dp/0130085197   (1397 words)

 Digital Image Processing -- from Mathematica Information Center
The course is to provide a modern, hands-on introduction to digital image processing appropriate for third and fourth year undergraduate electrical/computer engineering and science students.
Image acquisition and representation, enhancement methods, image coding, image analysis, and image processing hardware.
The Digital Image Processing course is taught in a computer-equipped classroom to benefit from the use of modern computational systems such as Mathematica.
library.wolfram.com /infocenter/Courseware/239   (285 words)

 Image processing - Wikipedia, the free encyclopedia
In the broadest sense, image processing is any form of information processing for which both the input and output are images, such as photographs or frames of video.
Digital image processing techniques are generally more versatile, reliable, and accurate; they have the additional benefit of being easier to implement than their analog counterparts.
Image processing brings some new concepts, such as connectivity and rotational invariance, that are meaningful only for two-dimensional signals.
en.wikipedia.org /wiki/Image_processing   (608 words)

 GameDev.net - An Introduction To Digital Image Processing
Image filters are normally designed in the spatial domain, where the information is encoded in its simplest form.
When computing the output image pixel by pixel at one point the kernel and the position of the searched pattern in the image will correspond perfectly, this will give us a peak of white we will be able to situate.
Digital image processing is far from being a simple transpose of audio signal principles to a two dimensions space.
www.gamedev.net /reference/articles/article2007.asp   (9007 words)

 Digital Image Processing: Product Information
Images can also be quickly enhanced by manipulating contrast, image geometry, and color.
Image regions can be interactively selected with a mouse for convenient and effective region-of-interest processing.
Digital Image Processing comes with detailed electronic documentation, including a step-by-step tutorial, so new users can quickly learn how to solve many common as well as one-of-a-kind image processing problems.
www.wolfram.com /products/applications/digitalimage   (252 words)

 EE604-Digital Image Processing
Digital image fundamentals; image models, sampling and quantization, basic relationships between pixels, image geometry.
Image transforms; Fourier transform, number theoretic transforms, cosine transform, Hoteling transform, Hough transform, Walsh transform, and wavelet transform.
Output the processed image to a file "x.out" in a binary format.
www.ece.uah.edu /courses/ee604   (480 words)

 Image Processing services in India, digital image processing solution in India, Image cleaning in India
Digital image processing is one of our core technology offerings.
We also offer innovative techniques and processes to obtain needed information from imagery as well as the development and integration of image processing algorithms with software into a user's work environment.
Images can be blended with the background color of the page, another image or one of the supported textures, such as sandstone or brick textures.
www.dimensioni.net /web-services/image-processing.html   (302 words)

 NTSB Training Center - Digital Image Processing (IM307)   (Site not responding. Last check: 2007-09-15)
Processing and storing of images for current and archival use in a variety of electronic formats.
Discussion of generally accepted protocols for processing of images to enhance image clarity and information while retaining authenticity crucial for use as documentary evidence.
Authenticity protocols – practices and procedures to ensure that the integrity and accuracy of the documentary digital image is not compromised at any point in the workflow process
www.ntsb.gov /Academy/CourseInfo/IM307_2006.htm   (364 words)

 Digital Image Processing   (Site not responding. Last check: 2007-09-15)
In many business and industry application domains handling and processing of digital images is a basic and important component.
This spans an extremely wide range of applications from digital content creation and management for web-based applications over medical imaging, digital photography, digital print and publishing to real-time 3D graphics in simulations and computer games.
This course prepares students in the fundamentals of digital image processing as used in various applications as outlined above and illustrates the various effects one can achieve with digital images and how to extract fundamental information.
www.ics.uci.edu /~majumder/DIP/dip.htm   (183 words)

 Amazon.com: Digital Image Processing: Books: Kenneth R. Castleman   (Site not responding. Last check: 2007-09-15)
Ideal for those who do not possess an advanced background in electrical engineering, this broad introduction to the fundamental concepts of digital imaging shows how the various techniques can be applied to solve real-world problems (e.g., in biology, astronomy, forensics, etc.).
Digital image processing-the manipulation of images by computer-is a relatively recent development in terms of humans' ancient fascination with visual stimuli.
Although it doesn't have any sample programming code, the description and the math functions in the book are good enough for me to understand the different imaging processing techniques and finish my image processing programming projects at work.
www.amazon.com /Digital-Image-Processing-Kenneth-Castleman/dp/0132114674   (1191 words)

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