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Title: A novel technique for the retrieval of compressed image and video databases.
Creator: Saksobhavivat, Pornvit., Florida Atlantic University, Furht, Borko, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: The classic methods in indexing image and video databases are either using keywords or analysis of color distribution. In the recent year, there is a new standard in image and video compression standard called JPEG and MPEG respectively. One of the basic operations of JPEG and MPEG is Discrete Cosine Transform (DCT). The human visual system is known to be very dependent on spatial frequency. The DCT has capability to provide a good approximation of the images' spatial frequency that is...
Show moreThe classic methods in indexing image and video databases are either using keywords or analysis of color distribution. In the recent year, there is a new standard in image and video compression standard called JPEG and MPEG respectively. One of the basic operations of JPEG and MPEG is Discrete Cosine Transform (DCT). The human visual system is known to be very dependent on spatial frequency. The DCT has capability to provide a good approximation of the images' spatial frequency that is sensitive to human eyes. We take this advantage of DCT in indexing image and video databases. However, the two-dimensional DCT can give us 64 coefficients per block of 8 x 8 pixels. These numbers are too many to calculate to receive fast indexing results. We use only first coefficient of DCT called DC coefficient to represent an 8 x 8 block of transformed data. This representation yields satisfactory indexing results.
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Date Issued: 1997
PURL: http://purl.flvc.org/fcla/dt/15442
Subject Headings: Video compression, Image compression, Indexing
Format: Document (PDF)

Title: A patent application for the invention of a method and apparatus for multi-view video coding.
Creator: Furht, Borko, Kalva, Hari
Date Issued: 2005-09-15
PURL: http://purl.flvc.org/fcla/dt/363494
Subject Headings: Digital video., Technology --Patents., Video compression.
Format: Document (PDF)

Title: Interactive system for visualization and retrieval of video data.
Creator: Furht, Borko
Date Issued: 2005-09-15
PURL: http://purl.flvc.org/fcla/dt/366423
Subject Headings: Digital video., Video compression., Technology --Patents.
Format: Document (PDF)

Title: Background of the invention: an interactive system for visualization and retrieval of video data.
Creator: Furht, Borko
Date Issued: 2005
PURL: http://purl.flvc.org/fcla/dt/366425
Subject Headings: Technology --Patents., Video compression., Digital video.
Format: Document (PDF)

Title: An approach to image compression using three-dimensional DCT.
Creator: Furht, Borko, Li, Xiuqi
Date Issued: 2003-09-24 - 2003-09-26
PURL: http://purl.flvc.org/fcla/dt/358419
Subject Headings: Image compression., Video compression., Three-dimensional display systems.
Format: Document (PDF)

Title: Enhancing video quality based on psychophysical studies of smooth pursuit eye movements.
Creator: Chilamakuri, Pavani., Florida Atlantic University, Furht, Borko, Glenn, William E., College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: When motion occurs in a scene, the quality of video degrades due to motion smear, which results in a loss of contrast in the image. The characteristics of the human vision system when smooth pursuit eye movements occur are different from those when the eye fixates on an object such as a video screen during motion. Smooth pursuit eye movements dominate in the presence of dynamic stimuli. In the presence of smooth pursuit eye movements, the contrast sensitivity for increasing target velocities...
Show moreWhen motion occurs in a scene, the quality of video degrades due to motion smear, which results in a loss of contrast in the image. The characteristics of the human vision system when smooth pursuit eye movements occur are different from those when the eye fixates on an object such as a video screen during motion. Smooth pursuit eye movements dominate in the presence of dynamic stimuli. In the presence of smooth pursuit eye movements, the contrast sensitivity for increasing target velocities shifts toward lower spatial frequencies. The sensitivity for low spatial frequencies during motion is higher than for a stationary case. This dissertation will propose a method to improve the perceptual quality of video using temporal enhancement prefiltering technique based on the characteristics of Smooth Pursuit Eye Movements (SPEM). The resulting technique closely matches the characteristics of the human visual system (HVS). When motion occurs, the eye tracks the moving targets in a scene as opposed to fixating on any portion of the scene. Hence, psychophysical studies of smooth pursuit eye movements were used as a basis to design the temporal filters. Results of experiments show that temporal enhancement results in improved quality by increasing the apparent sharpness of the image sequence. In this dissertation, a study of research describing how motion affects the image quality at the camera lens and the human eye is presented. This dissertation uses that research to develop a temporal enhancement technique to improve the quality of video degraded by motion.
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Date Issued: 2003
PURL: http://purl.flvc.org/fau/fd/FADT12035
Subject Headings: Eye--Movements, Digital video, Visual perception, Video compression
Format: Document (PDF)

Title: Evaluation of 3DTV service using asymmetirc view coding based in MPEG-2.
Creator: Furht, Borko, Kalva, Hari, Christodoulou, Lakis
Abstract/Description: This paper presents the results of the 3DTV quality evaluation on autostereoscopic displays using asymmetric view coding. Asymmetric view coding encodes the stereo views with different quality. It has been shown that the human visual system is able to compensate for this asymmetric view quality and present a good quality 3D video. Asymmetric video coding can be exploited to reduce the bandwidth requirements for 3DTV services. The key factors that affect the asymmetric video coding are the...
Show moreThis paper presents the results of the 3DTV quality evaluation on autostereoscopic displays using asymmetric view coding. Asymmetric view coding encodes the stereo views with different quality. It has been shown that the human visual system is able to compensate for this asymmetric view quality and present a good quality 3D video. Asymmetric video coding can be exploited to reduce the bandwidth requirements for 3DTV services. The key factors that affect the asymmetric video coding are the compression algorithms, the human visual system, and the 3D display.
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Date Issued: 2007-05-07 - 2007-05-09
PURL: http://purl.flvc.org/fcla/dt/358266
Subject Headings: MPEG (Video coding standard), Three-dimensional display systems., Video compression., Digital video.
Format: Document (PDF)

Title: T1 Satcom interface used in conjunction with ACTS VSAT terminal.
Creator: Robinson, Lancelot George., Florida Atlantic University, Helmken, Henry, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: To observe the effects of satellite transmission on video compression technology designed at FAU's Imaging Systems Lab; an interface was designed to accept data directly from a video encoder or a 16 GByte RAID storage device. The design uses a Xilinx XC4005E field programmable gate array. The interface connects to a high speed enhanced parallel port at the computer backplane. Data stored via the interface on the computer; is transferred at a T1 rate through the ACTS T1-VSAT satellite link. In...
Show moreTo observe the effects of satellite transmission on video compression technology designed at FAU's Imaging Systems Lab; an interface was designed to accept data directly from a video encoder or a 16 GByte RAID storage device. The design uses a Xilinx XC4005E field programmable gate array. The interface connects to a high speed enhanced parallel port at the computer backplane. Data stored via the interface on the computer; is transferred at a T1 rate through the ACTS T1-VSAT satellite link. In loop-back mode the data is stored, then evaluated.
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Date Issued: 1997
PURL: http://purl.flvc.org/fcla/dt/15430
Subject Headings: Artificial satellites in telecommunication, VSATs (Telecommunication), Video compression
Format: Document (PDF)

Title: Characterization and performance evaluation of video conference traffic in ATM networks.
Creator: Nayak, Chandrika Narayana., Florida Atlantic University, Ilyas, Mohammad, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: In order to effectively transport digital compressed video over Broadband Integrated Services Digital Networks (B-ISDN) with Asynchronous Transfer Mode (ATM), the characteristics of the video source traffic should be understood. The nature of the video traffic depends primarily on the source, the content of the video and the coding algorithm that removes redundancies for efficient transmission over networks. In this study, video conference data encoded using a subband coding scheme, Digital...
Show moreIn order to effectively transport digital compressed video over Broadband Integrated Services Digital Networks (B-ISDN) with Asynchronous Transfer Mode (ATM), the characteristics of the video source traffic should be understood. The nature of the video traffic depends primarily on the source, the content of the video and the coding algorithm that removes redundancies for efficient transmission over networks. In this study, video conference data encoded using a subband coding scheme, Digital Video Compression System (DVCS), is analyzed to determine its characteristics. Several video traffic sources are multiplexed through an ATM network node with limited capacity and the performance of this environment is evaluated by using a simulation technique. The simulation results are presented for the performance measures for varying traffic and network conditions.
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Date Issued: 1995
PURL: http://purl.flvc.org/fcla/dt/15166
Subject Headings: Broadband communications systems, Integrated services digital networks, Asynchronous transfer mode, Digital video, Video compression
Format: Document (PDF)

Title: Methods and Algorithms for Human Detection in Video Sequences.
Creator: Pertuz, Carlos, Marques, Oge, Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Lower prices of video sensors, security concerns and the need for better and faster algorithms to extract high level information from video sequences are all factors which have stimulated research in the area of automated video surveillance systems. In the context of security the analysis of human interrelations and their environment provides hints to proactively identify anomalous behavior. However, human detection is a necessary component in systems where the automatic extraction of higher...
Show moreLower prices of video sensors, security concerns and the need for better and faster algorithms to extract high level information from video sequences are all factors which have stimulated research in the area of automated video surveillance systems. In the context of security the analysis of human interrelations and their environment provides hints to proactively identify anomalous behavior. However, human detection is a necessary component in systems where the automatic extraction of higher level information, such as recognizing individuals' activities, is required. The human detection problem is one of classification. In general, motion, appearance and shape are the classification approaches a system can employ to perform human detection. Techniques representative of these approaches, such us periodic motion detection, skin color detection and MPEG-7 shape descriptors are implemented in this work. An infrastructure that allows data collection for such techniques was also implemented.
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Date Issued: 2007
PURL: http://purl.flvc.org/fau/fd/FA00012538
Subject Headings: MPEG (Video coding standard), Image processing--Digital techniques, Form perception, Computer algorithms, Video compression
Format: Document (PDF)

Title: Interactive progressive encoding system for transmission of complex images.
Creator: Furht, Borko, Wang, Yingli, Celli, Joseph
Date Issued: 1998-11
PURL: http://purl.flvc.org/fcla/dt/351011
Subject Headings: Internetworking (Telecommunication), Digital video., Image transmission., JPEG (Image coding standard), Data compression (Telecommunication) --Standards., Image compression --Standards.
Format: Document (PDF)

Title: HEVC optimization in mobile environments.
Creator: Garcia, Ray, Kalva, Hari, Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Recently, multimedia applications and their use have grown dramatically in popularity in strong part due to mobile device adoption by the consumer market. Applications, such as video conferencing, have gained popularity. These applications and others have a strong video component that uses the mobile device’s resources. These resources include processing time, network bandwidth, memory use, and battery life. The goal is to reduce the need of these resources by reducing the complexity of the...
Show moreRecently, multimedia applications and their use have grown dramatically in popularity in strong part due to mobile device adoption by the consumer market. Applications, such as video conferencing, have gained popularity. These applications and others have a strong video component that uses the mobile device’s resources. These resources include processing time, network bandwidth, memory use, and battery life. The goal is to reduce the need of these resources by reducing the complexity of the coding process. Mobile devices offer unique characteristics that can be exploited for optimizing video codecs. The combination of small display size, video resolution, and human vision factors, such as acuity, allow encoder optimizations that will not (or minimally) impact subjective quality. The focus of this dissertation is optimizing video services in mobile environments. Industry has begun migrating from H.264 video coding to a more resource intensive but compression efficient High Efficiency Video Coding (HEVC). However, there has been no proper evaluation and optimization of HEVC for mobile environments. Subjective quality evaluations were performed to assess relative quality between H.264 and HEVC. This will allow for better use of device resources and migration to new codecs where it is most useful. Complexity of HEVC is a significant barrier to adoption on mobile devices and complexity reduction methods are necessary. Optimal use of encoding options is needed to maximize quality and compression while minimizing encoding time. Methods for optimizing coding mode selection for HEVC were developed. Complexity of HEVC encoding can be further reduced by exploiting the mismatch between the resolution of the video, resolution of the mobile display, and the ability of the human eyes to acquire and process video under these conditions. The perceptual optimizations developed in this dissertation use the properties of spatial (visual acuity) and temporal information processing (motion perception) to reduce the complexity of HEVC encoding. A unique feature of the proposed methods is that they reduce encoding complexity and encoding time. The proposed HEVC encoder optimization methods reduced encoding time by 21.7% and bitrate by 13.4% with insignificant impact on subjective quality evaluations. These methods can easily be implemented today within HEVC.
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Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA00004112
Subject Headings: Coding theory, Digital coding -- Data processing, Image processing -- Digital techniques, Multimedia systems, Video compression
Format: Document (PDF)

Title: XYZ Video Compression: An algorithm for real-time compression of motion video based upon the three-dimensional discrete cosine transform.
Creator: Westwater, Raymond John., Florida Atlantic University, Furht, Borko, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: XYZ Video Compression denotes a video compression algorithm that operates in three dimensions, without the overhead of motion estimation. The smaller overhead of this algorithm as compared to MPEG and other "standards-based" compression algorithms using motion estimation suggests the suitability of this algorithm to real-time applications. The demonstrated results of compression of standard motion video benchmarks suggest that XYZ Video Compression is not only a faster algorithm, but develops...
Show moreXYZ Video Compression denotes a video compression algorithm that operates in three dimensions, without the overhead of motion estimation. The smaller overhead of this algorithm as compared to MPEG and other "standards-based" compression algorithms using motion estimation suggests the suitability of this algorithm to real-time applications. The demonstrated results of compression of standard motion video benchmarks suggest that XYZ Video Compression is not only a faster algorithm, but develops superior compression ratios as well. The algorithm is based upon the three-dimensional Discrete Cosine Transform (DCT). Pixels are organized as 8 x 8 x 8 cubes by taking 8 x 8 squares out of 8 consecutive frames. A fast three-dimensional transform is applied to each cube, generating 512 DCT coefficients. The energy-packing property of the DCT concentrates the energy in the cube into few coefficients. The DCT coefficients are quantized to maximize the energy concentration at the expense of introduction of a user-determined level of error. A method of adaptive quantization that generates optimal quantizers based upon statistics gathered for the 8 consecutive frames is described. The sensitivity of the human eye to various DCT coefficients is used to modify the quantizers to create a "visually equivalent" cube with still greater energy concentration. Experiments are described that justify choice of Human Visual System factors to be folded into the quantization step. The quantized coefficients are then encoded into a data stream using a method of entropy coding based upon the statistics of the quantized coefficients. The bitstream generated by entropy coding represents the compressed data of the 8 motion video frames, and typically will be compressed at 50:1 at 5% error. The decoding process is the reverse of the encoding process: the bitstream is decoded to generate blocks of quantized DCT coefficients, the DCT coefficients are dequantized, and the Inverse Discrete Cosine Transform is performed on the cube to recover pixel data suitable for display. The elegance of this technique lies in its simplicity, which lends itself to inexpensive implementation of both encoder and decoder. Finally, real-time implementation of the XYZ Compressor/Decompressor is discussed. Experiments are run to determine the effectiveness of the implementation.
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Date Issued: 1996
PURL: http://purl.flvc.org/fcla/dt/12450
Subject Headings: Digital video, Data compression (Telecommunication), Image processing--Digital techniques, Coding theory
Format: Document (PDF)

Title: Video transcoding using machine learning.
Creator: Holder, Christopher., College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: The field of Video Transcoding has been evolving throughout the past ten years. The need for transcoding of video files has greatly increased because of the new upcoming standards which are incompatible with old ones. This thesis takes the method of using machine learning for video transcoding mode decisions and discusses ways to improve the process of generating the algorithm for implementation in different video transcoders. The transcoding methods used decrease the complexity in the mode...
Show moreThe field of Video Transcoding has been evolving throughout the past ten years. The need for transcoding of video files has greatly increased because of the new upcoming standards which are incompatible with old ones. This thesis takes the method of using machine learning for video transcoding mode decisions and discusses ways to improve the process of generating the algorithm for implementation in different video transcoders. The transcoding methods used decrease the complexity in the mode decision inside the video encoder. Also methods which automate and improve results are discussed and implemented in two different sets of transcoders: H.263 to VP6 , and MPEG-2 to H.264. Both of these transcoders have shown a complexity loss of almost 50%. Video transcoding is important because the quantity of video standards have been increasing while devices usually can only decode one specific codec.
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Date Issued: 2008
PURL: http://purl.flvc.org/FAU/166451
Subject Headings: Coding theory, Image transmission, Technological innovations, File conversion (Computer science), Data structures (Computer science), MPEG (Video coding standard), Digital media, Video compression
Format: Document (PDF)

FAU Theses and Dissertations (8)	+ -
FAU College Collections (6)	+ -

Video compression (7)	+ -
Digital video. (5)	+ -
Video compression. (5)	+ -
Coding theory (3)	+ -
Digital video (3)	+ -

MPEG (Video coding standard) (3)	+ -
Technology --Patents. (3)	+ -
Image processing--Digital techniques (2)	+ -
Three-dimensional display systems. (2)	+ -
Artificial satellites in telecommunication (1)	+ -
Asynchronous transfer mode (1)	+ -
Broadband communications systems (1)	+ -
Computer algorithms (1)	+ -
Data compression (Telecommunication) (1)	+ -
Data compression (Telecommunication) --Standards. (1)	+ -
Data structures (Computer science) (1)	+ -
Digital coding -- Data processing (1)	+ -
Digital media (1)	+ -
Eye--Movements (1)	+ -
File conversion (Computer science) (1)	+ -
Form perception (1)	+ -
Image compression (1)	+ -
Image compression --Standards. (1)	+ -
Image compression. (1)	+ -
Image processing -- Digital techniques (1)	+ -
Image transmission (1)	+ -
Image transmission. (1)	+ -
Indexing (1)	+ -
Integrated services digital networks (1)	+ -
Internetworking (Telecommunication) (1)	+ -

Electronic Thesis or Dissertation (8)	+ -
article (3)	+ -
patent (3)	+ -

Furht, Borko (9)	+ -
College of Engineering and Computer Science (8)	+ -
Department of Computer and Electrical Engineering and Computer Science (8)	+ -
Florida Atlantic University (7)	+ -
Kalva, Hari (3)	+ -

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