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Analog image processing is the use of an optical computer to process physical, optical images formed by light waves coming from an object, as opposed
Analog_image_processing
Algorithmic processing of digitally-represented images
subcategory or field of digital signal processing, digital image processing has many advantages over analog image processing. It allows a much wider range of
Digital_image_processing
American semiconductor manufacturer
consumer electronics applications. Analog Devices products include analog signal processing and digital signal processing technologies. These technologies
Analog_Devices
Mathematical signal manipulation by computers
Digital signal processing and analog signal processing are subfields of signal processing. DSP applications include audio and speech processing, sonar, radar
Digital_signal_processing
Field of electrical engineering
analog feedback shift registers. This technology was a predecessor of digital signal processing (see below), and is still used in advanced processing
Signal_processing
Electronic moving image
Analog display devices reproduce each frame, effectively doubling the frame rate as far as perceptible overall flicker is concerned. When the image capture
Video
Creation of a digitally encoded representation of the visual characteristics of an object
include the processing, compression, storage, printing and display of such images. A key advantage of a digital image, versus an analog image such as a
Digital_imaging
synthesizer did with audio. An analog, Modular Synthesizer, real time, video processing instrument, it provided video processing performance and produced subtle
Sandin_Image_Processor
Continuous time-varying signal
components.[citation needed] Amplifier Analog computer Analog device Analogue electronics Analog signal processing Magnetic tape Preamplifier Ferguson,
Analog_signal
Process that changes pixel intensity
In image processing, normalization is a process that changes the range of pixel intensity values, a kind of intensity mapping. Applications include photographs
Normalization (image processing)
Normalization_(image_processing)
Digitalisation of analog documents
Document processing is a field of research and a set of production processes aimed at making an analog document digital. Document processing does not
Document_processing
Pictures encoded as binary data
devices (CCDs) for use in a wide range of image capture devices and gradually displaced the use of analog film and tape in photography and videography
Digital_image
Chemical process that transforms a latent image into a visible image
to produce a negative or positive image. Photographic processing transforms the latent image into a visible image, makes this permanent and renders it
Photographic_processing
Device that converts images into electronic signals
signals conveys the information in the image. Image sensors are used in electronic imaging devices of both analog and digital types, which include digital
Image_sensor
Standard test image
Lenna (or Lena) is a standard test image used in the field of digital image processing, starting in 1973. It is a picture of the Swedish model Lena Forsén
Lenna
Processes of altering images
traditional photo-chemical photographs, or illustrations. Traditional analog image editing is known as photo retouching, using tools such as an airbrush
Image_editing
Specialized microprocessor optimized for digital signal processing
circuit chips. They are widely used in audio signal processing, telecommunications, digital image processing, radar, sonar and speech recognition systems, and
Digital_signal_processor
Non-digital photography that uses film or chemical emulsions
known by the retronym analog photography, is a term usually applied to photography that uses chemical processes to capture an image, typically on paper
Analog_photography
Device for suppressing part of a signal
and Analysis of Analog Filters: A Signal Processing Perspective, Springer, 2001 ISBN 0792373731. J.S.Chitode, Digital Signal Processing, Technical Publications
Filter_(signal_processing)
Device that optically scans images, printed text
Before the advent of digital image processing in the middle of the 20th century, the term scanner originally referred to analog equipment used within offset
Image_scanner
Visible interference in an image
adjustable (analog) gain setting in the signal processing chain. It determines the amount of gain applied to the voltage output from the image sensor and
Image_noise
Analog Signal Processing (R-ASP), as an alternative to DSP-based processing, might be defined as the manipulation of signals in their pristine analog
Microwave analog signal processing
Microwave_analog_signal_processing
Varying physical quantity that conveys information
multiple subject fields, including signal processing, information theory and biology. In signal processing, a signal is a function that conveys information
Signal
Image in which each point can transition smoothly between shades
continuous-tone images are natural phenomena, images produced with dye-based processes, images produced with certain analog printmaking processes (intaglio
Continuous_tone_image
the image formation process also includes analog to digital conversion and sampling. The imaging process is a mapping of an object to an image plane
Image_formation
Photographic process
and printing papers available for analog photography rarely rely on any other chemical process to record an image. A suspension of silver salts in gelatin
Gelatin_silver_print
System that converts an analog signal into a digital signal
processing systems that process, store, or transport virtually any analog signal in digital form. TV tuner cards, for example, use fast video analog-to-digital
Analog-to-digital_converter
light sensing mechanism. The image processing circuitry may be implemented using analog, digital, or mixed signal (analog and digital) circuitry. One area
Vision_chip
surfaces Bicycle speed sensors Actigraphy Air pollution sensor Analog image processing Atomic force microscopy Atomic Gravitational Wave Interferometric
List_of_sensors
Enhanced signal representation in digital media
ranges of images, videos, audio, or radio. It may also apply to the means of recording, processing, and reproducing such signals including analog and digitized
High_dynamic_range
Noise that reduces quantization error
preventing large-scale patterns such as color banding in images. Dither is routinely used in processing of both digital audio and video data, and is often one
Dither
Nikon media processors
additional image- and audio-processing. The Expeed 3 (FR) (EI-158/175) is based on an improved Expeed 2 EI-154 with greatly increased processing speed. A
Expeed
Analog computer animation system
animation, which produced sharper images and more sophisticated 3D imagery. Animations created on Scanimate and similar analog computer animation systems have
Scanimate
Art and practice of creating images by recording light
processed and stored in a digital image file for subsequent display or processing. The result with photographic emulsion is an invisible latent image
Photography
Video signal that has been split into component channels
Component video is an analog video signal split into two or more component channels. In popular use, it refers to a type of component analog video (CAV) information
Component_video
Electrical component for processing data
central processing unit (CPU), the main processor in a system. It can also refer to other specialized processors such as graphics processing units (GPU)
Processor_(computing)
Audio performance differences between technologies
digitization process, but the electronic implementation of conversion circuits introduces additional noise. In an analog system, other natural analog noise sources
Comparison of analog and digital recording
Comparison_of_analog_and_digital_recording
Device that captures still frames from video
grabbers can capture images at high frame rates, high resolutions, or both. Analog frame grabbers, which accept and process analog video signals, include
Frame_grabber
Converting information into digital form
enabling processing by digital computers and other operations. However, the fundamental process of digitizing entails "the conversion of analog source material
Digitization
Limitation in digital photography and video
may also result from later image processing using image editing software. Clipping that is due to internal image processing in a digital camera may often
Clipping_(photography)
American visual media company
Getty Images Holdings, Inc. (stylized as gettyimages) is an American visual media company and supplier of stock images, editorial photography, video, and
Getty_Images
Use of digital image processing to process images obtained from a microscope
Microscope image processing is a broad term that covers the use of digital image processing techniques to process, analyze and present images obtained from
Microscope_image_processing
Components from image source to output
performing any intermediate digital image processing consisting of two or more separate processing blocks. An image/video pipeline may be implemented as computer
Color_image_pipeline
Filter used to construct a smooth analog signal from a digital input
mixed-signal system (analog and digital), a reconstruction filter, sometimes called an anti-imaging filter, is used to construct a smooth analog signal from a
Reconstruction_filter
Process of removing noise from a signal
component, as with common-mode rejection ratio. All signal processing devices, both analog and digital, have traits that make them susceptible to noise
Noise_reduction
American engineer
of digital image processing mentioned in "THE BEST OF NASA'S SPINOFFS," which says: There also was a need for hardware to record both analog video and
Frederic_C._Billingsley
Loss of quality between copies
Other causes include signal noise in analog systems and conversion between analog and digital formats. In analog systems (including systems that use digital
Generation_loss
Measure of how fine an image is
Image resolution is the level of detail of an image. The term applies to digital images, film images, and other types of images. "Higher resolution" means
Image_resolution
Signal processing effect
examples of aliasing In digital signal processing, aliasing is a phenomenon in which a reconstructed signal from samples of the original signal contains
Aliasing
Procedure of deliberately processing photographic film
Cross processing (sometimes abbreviated to Xpro, or hyphenated as Cross-processing) is the deliberate processing of photographic film in a chemical solution
Cross_processing
Television that uses analog signals
perceives it as one image. The process repeats, and the next sequential frame is displayed, allowing the depiction of motion. The analog television signal
Analog_television
Specialized electronic circuit that accelerates graphics
A graphics processing unit (GPU) is a specialized electronic circuit designed for digital image processing and to accelerate computer graphics, being
Graphics_processing_unit
Copy protection system in VHS and DVDs
DVDs encoded with APS become garbled and unwatchable. The process works by adding pulses to analog video signals to negatively impact the AGC circuit of a
Analog_Protection_System
Process of mapping a continuous set to a countable set
In mathematics and digital signal processing, quantization is the process of mapping input values from a large set (often a continuous set) to output
Quantization (signal processing)
Quantization_(signal_processing)
Device that converts a digital signal into an analog signal
a digital-to-analog converter (DAC, D/A, D2A, or D-to-A) is a system that converts a digital signal into an analog signal. An analog-to-digital converter
Digital-to-analog_converter
Parallel computing paradigm
allowed between neighbouring units only. Typical applications include image processing, analyzing 3D surfaces, solving partial differential equations, reducing
Cellular_neural_network
Characteristic of an image
conversion process from analog media to digital image. The process of determining the level of accuracy is called Image Quality Assessment (IQA). Image quality
Image_quality
Ratio of the desired signal to the background noise
get lost in the noise floor – Analog Devices The Relationship of dynamic range to data word size in digital audio processing Calculation of signal-to-noise
Signal-to-noise_ratio
Photography with a digital camera
to an analog-to-digital converter (ADC) to produce images focused by a lens, as opposed to an exposure on photographic film. The digitized image is stored
Digital_photography
Digital TV with specs similar to analog broadcasts
players. Digital SDTV broadcast eliminates the ghosting and noisy images associated with analog systems. However, if the reception has interference or is poor
Standard-definition television
Standard-definition_television
Image sharpening technique
masking (USM) is an image sharpening technique, first implemented in darkroom photography, but now commonly used in digital image processing software. Its name
Unsharp_masking
Image on photographic film
an image quickly enough for ordinary picture-taking are darkened, rather than bleached, by exposure to light and subsequent photographic processing. In
Negative_(photography)
Type of photographic film that produces a positive image on a transparent base
Moreover, specialized photographic processing laboratories produce diapositive slides from digital-camera images in formats such as the JPEG, from computer-generated
Reversal_film
Measurement of a signal at discrete time intervals
used in quantization. Few analog systems have a signal-to-noise ratio (SNR) exceeding 120 dB. However, digital signal processing operations can have very
Sampling_(signal_processing)
Color representation error in image processing
An image is said to be burned or burnt when its original gamut considerably exceeds the target gamut, or when the result of processing considerably exceeds
Burned_(image)
Image created by light falling on a light-sensitive surface
photographic film or an electronic image sensor. The process and practice of creating such images is called photography. Photographs are now created using
Photograph
the zoomed image. Both the analog and digital PTZ can be combined together, potentially with a combined control system that is at first analog, but switches
Video_management_system
Perception of image sharpness that is unrelated to actual resolution
because the algorithm is derived from the eponymous analog processing method. In the example image, two light gray lines were drawn on a gray background
Acutance
display aspect ratio (DAR) is shown, not the storage aspect ratio (SAR); analog television does not have well-defined pixels, while several digital television
List of common display resolutions
List_of_common_display_resolutions
Processing of natural language by a computer
Natural language processing (NLP) is the processing of natural language information by a computer. NLP is a subfield of computer science and is closely
Natural_language_processing
Analog raster manipulation device
Synthesizer, also known as the Rutt/Etra Scan Processor, is an analog device that modifies a conventional video image through electromagnetic deflection of the
Rutt/Etra_Video_Synthesizer
System with capability to digitize very high bandwidth signals
The time-stretch analog-to-digital converter (TS-ADC), also known as the time-stretch enhanced recorder (TiSER), is an analog-to-digital converter (ADC)
Time-stretch analog-to-digital converter
Time-stretch_analog-to-digital_converter
Radio communication system implemented in software
sound card, or other analog-to-digital converter, preceded by some form of RF front end. Significant amounts of signal processing are handed over to the
Software-defined_radio
Baseband analog video signal format
baseband signal or color, video, blanking and sync), is an analog video format that combines image information—such as brightness (luminance), color (chrominance)
Composite_video
Signal format for standard-definition video
signal processing and standard-definition TV was broadcast over NTSC composite signals. Standard analog television signals go through several processing steps
S-Video
and L. Harmon, "Computer-Produced Greyscales," Computer Graphics and Image Processing No. 1, 1972, pp. 1–20. Harmon, L. D. and Julesz, B. (1973). Masking
Leon_Harmon
Topics referred to by the same term
systems that process 1 bit per work cycle 1-bit DAC, the oversampling digital-to-analog converter technology Binary image or 1-bit images, images made out
1-bit
Changing the sampling rate of a discrete signal
Signal Processing. Prentice Hall. ISBN 978-0137027415. In satellite and medical image processing, sample rate conversion is necessary for image enhancement
Sample-rate_conversion
Digital image output of computer display
screenshot (also known as screen capture or screen grab) is an analog or digital image that shows the contents of a computer display. A screenshot is
Screenshot
Uses of science and technology in photography
and chemical processing, but it is more common and easily understood in digital processing. It occurs whenever an optical or digital image is sampled or
Science_of_photography
Device that electronically creates a video signal
Chromascope Analog Video Synthesizer (http://www.veoh.com/videos/e68305kXXwNmEs) "Next Time", 1983 – Chromascope with Luma-Keying and Image Processing (http://www
Video_synthesizer
Image processing filter
Edge enhancement is an image processing filter that enhances the edge contrast of an image or video in an attempt to improve its acutance (apparent sharpness)
Edge_enhancement
it does not use as many images, preferring to stick with simple bar charts and lists to communicate similar information. Analog can export reports in a
Analog_(program)
Recoloration of black-and-white photographs
of altering the color of monochrome photography. In analog photography, it is a chemical process carried out on metal salt-based prints, such as silver
Photographic_print_toning
Technique in film-based photography
XR film Cross processing "Lomography All Film". Lomography Shop. 2023-06-11. Retrieved 2023-06-11. ""Greenscaling" Aerochrome". Analog.Cafe. 2025-04-08
Redscale
the much greater processing power of modern graphics cards, and the awkwardness of adding an additional analog hardware signal processing path, this method
Video_overlay
Technology and methods used to provide imaging-based automatic inspection and analysis
extract information from an image on an automated basis, as opposed to image processing, where the output is another image. The information extracted can
Machine_vision
Process of varying one or more properties of a periodic waveform
table, instead of analog signal processing. In that case, the above DAC step should be done after this step. Amplification and analog bandpass filtering
Signal_modulation
Color film developing process
C-41 processors, and are marketed for home or field use. Similar to black-and-white film processing, the C-41 process can be adjusted to push-process films
C-41_process
Chromogenic photographic process
film. Unlike some color reversal processes (such as Kodachrome K-14) that produce positive transparencies, E-6 processing can be performed by individual
E-6_process
Video processing technique
Scan conversion or scan converting rate is a video processing technique for changing the vertical / horizontal scan frequency of video signal for different
Scan_conversion
Type of converter for electronics
processing takes place in the digital domain, which helps relax the requirements for the subsequent analog low-pass filter (for anti-aliasing image frequencies
1-bit_DAC
Hybrid RISC digital signal processor
set contains media-processing extensions to help accelerate pixel-processing operations commonly used in video compression and image compression and decompression
Blackfin
Camera technique
the film or image sensor on cameras. Sometimes the term is used when a shallow depth of field is simulated with digital post-processing; the name may
Tilt–shift_photography
Color space
YIQ is the color space used by the analog NTSC color TV system. I stands for in-phase, while Q stands for quadrature, referring to the components used
YIQ
Type of receiver design for radio signals
becoming commonplace in both analog and digital TV receiver designs. Using advanced analog- and digital signal processing techniques, cheap, high quality
Low_IF_receiver
Digital electronic representation of moving visual images
images (video) in the form of encoded digital data. This is in contrast to analog video, which represents moving visual images in the form of analog signals
Digital_video
Proportion between the width and the height of a pixel
4:3 display. In analog images such as film there is no notion of pixel, nor notion of SAR or PAR, but in the digitization of analog images the resulting
Pixel_aspect_ratio
Relative timing of audio and video
audio (sound) and video (image) parts during creation, post-production (mixing), transmission, reception and play-back processing. AV synchronization is
Audio-to-video synchronization
Audio-to-video_synchronization
Central computer component that executes instructions
A central processing unit (CPU), also known as a central processor, main processor, or simply processor, is the primary processor in a given computer
Central_processing_unit
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