Vector scan display ppt on tv

UBI 516 Advanced Computer Graphics Aydın Öztürk Aydın Öztürk

, not just wireframes Leverages low-cost CRT technology (i.e., TVs)Leverages low-cost CRT technology (i.e., TVs) Bright! Display emits lightBright! Display emits lightCons: Requires screen-size memory arrayRequires screen-size memory array /sync pulse Early computer displaysEarly computer displays –avoided synchronization using ‘vector’ algorithm –flicker and refresh were problematic CRTs – A Review Raster Displays (early 70s)Raster Displays (early 70s) –like television, scan all pixels in regular pattern /


Introduction to Computer Graphics CS 445 / 645 Lecture 2 General Graphics Systems Lecture 2 General Graphics Systems Daniel Rozin, Wooden Mirror (1999)

, not just wireframes Leverages low-cost CRT technology (i.e., TVs)Leverages low-cost CRT technology (i.e., TVs) Bright! Display emits lightBright! Display emits lightCons: Requires screen-size memory arrayRequires screen-size memory array /sync pulse Early computer displaysEarly computer displays –avoided synchronization using ‘vector’ algorithm –flicker and refresh were problematic CRTs – A Review Raster Displays (early 70s)Raster Displays (early 70s) –like television, scan all pixels in regular pattern /


1 Graphics Device System. 2 Acknowledgement I’d like to thank Pradondet Nilagupta who creates such a good work on these lecture notes.

/classes/6.837/F98/Lecture1/Slide11.html Name two disadvantages Just does wireframe Display needs constant update to avoid fading 30 Vector Display Architecture 31 Display Technologies: CRTs Raster Displays Black and white television: an oscilloscope with a fixed scan pattern: left to right, top to bottom Paint entire screen 30 times/sec Actually, TVs paint top-to-bottom 60 times/sec, alternating between even and odd/


1 Graphics Device System Pradondet Nilagupta. 2 Graphical System 5 major elements for a computer graphic system Processor Memory Frame buffer Input devices.

/classes/6.837/F98/Lecture1/Slide11.html Name two disadvantages Just does wireframe Display needs constant update to avoid fading 23 Vector Display Architecture 24 Display Technologies: CRTs Raster Displays Black and white television: an oscilloscope with a fixed scan pattern: left to right, top to bottom Paint entire screen 30 times/sec Actually, TVs paint top-to-bottom 60 times/sec, alternating between even and odd/


Warren Robinett (Rev. by A. Di Blas, UCSC, for CMPE112) 1 Warren Robinett University of North Carolina at Chapel Hill Department of Computer Science (Used.

, for CMPE112) 19 Frame Timing Kernel (display loop synced with scan beam)Kernel (display loop synced with scan beam) –Vertical Blank: 30 scan linesGame play – 192 scan linesDisplay – Overscan: 37 scan linesGame play –Vertical Sync: 3 scan lines Kernel (display loop synced with scan beam)Kernel (display loop synced with scan beam) –Vertical Blank: 30 scan linesGame play – 192 scan linesDisplay – Overscan: 37 scan linesGame play –Vertical Sync: 3 scan lines Warren Robinett (Rev. by A/


MULTIMEDIA COMPRESSION TECHNIQUES. UNIT I INTRODUCTION.

formats Taxonomy of compression Lossless and lossy compression Performance measures Scalar and vector Quantisation Multimedia Multimedia involves multiple modalities of text, audio, images, drawings/uses a time interval of 1/72 s. In TV and in some monitors and multimedia standards, another system, interlaced scanning, is used. Here, the odd-numbered lines are/per pixel A sample is related to a subpixel on a physical display.subpixel Vertical Trace 45 Alternatively referred to as a vertical blanking interval/


4.1 Digital Multimedia Elements Graphics Audio Video.

vector object easily without affecting the quality of vector graphics. 4.1 Digital Multimedia Elements Graphics Vector graphics 4.1 Digital Multimedia Elements Bitmap Vector graphics Magnification of an image in vector graphic and bitmap format Graphics Vector graphics The file size of vector/using a scanner. The scanned images are stored as / & white photo (for screen display) Colour photo (for screen display) Colour photo (for high quality/TV tuner box A TV tuner box (left) and a TV tuner card (right) TV/


Introduction to Computer Graphics CS 445 / 645 David Brogan

Display Technologies: CRTs Vector Displays Anybody remember Battlezone? Tempest?Anybody remember Battlezone? Tempest? Vector Displays Anybody remember Battlezone? Tempest?Anybody remember Battlezone? Tempest? Display Technologies: CRTs Vector Displays Early computer displays: basically an oscilloscopeEarly computer displays/ persistence, lighting... Display Technologies: CRTs Raster Displays Interlaced ScanningInterlaced Scanning Assume can only scan 30 times / secondAssume can only scan 30 times / second/


A U.S. Department of Energy Office of Science Laboratory Operated by The University of Chicago Argonne National Laboratory Office of Science U.S. Department.

selection dialog User settable monitor of 1D/2D scan record Display near real-time 1D and 2D scanning data Flexible 1D display in detectors, line texture, plot ranges and /Color Table Image Color Scaheme… Change Color Table… Color Bar Config… TV Eq TV AspRt LIGHT_SHADE_SURF CONTOUR SHOW3 PLOT2D… SHADE_SURF Save Image for AIM Save as/Energy 35 Open 1D… Open 2D… Open ASCII… Printer… Quit Vector X Vector Y Vector Zy Vector Zx 2DImage COMFIT-> CURVEFIT ERRORFIT GAUSSFIT LADFIT LINFIT POLYFITW PLOYFIT LORENTZIAN /


數位三維視訊 楊 家 輝 Jar-Ferr Yang 電腦與通信工程研究所 電機工程學系 國立成功大學 Institute of Computer and Communication Engineering Department of Electrical Engineering National.

based video from natural or synthetic source –Applications: Internet, cable TV, virtual studio, home LAN etc.. MPEG-7 –Multimedia content /Processes PreprocessingEncoding Storage and/or Transmission DecodingPost- Processing Display Source National Cheng Kung University, Tainan, Taiwan Department/half pixel)  Macroblock basis Current Picture Anchor Picture Motion Vectors Predictive Difference National Cheng Kung University, Tainan, Taiwan Department of/ 58 62 63 Inverse Scan Alter- native Scan 0 1 2 3/


© 2005 Pearson Education Chapter2 Overview of Graphics Systems.

produce an interlaced image. Aspect Ratio Frame aspect ratio (FAR) = horizontal/vertical size TV 4:3 HDTV 16:9 Page 8.5:11 ~ 3/4 Pixel aspect ratio (PAR) = FAR vres/hres Nuisance in graphics if not 1 © 2005 Pearson Education CRT Display Principles Random-Scan Display Principles –Calligraphic Displays also called vector, stroke or line drawing graphics –Electron beam directed only to the points of/


CS 450: Computer Graphics INTRODUCTION TO COMPUTER GRAPHICS

Vector displays Raster-scan displays CRT: VECTOR DISPLAYS Also called random-scan, stroke-writing, or calligraphic displays Electron beam actually draws points, lines, and curves directly List of things to draw stored in display list (also called refresh display file, vector file, or display /color looks right Advantages: Glasses are lightweight Image is brighter than active 3D Disadvantages: Need special TV Only seeing HALF the vertical resolution! Left: Passive 3D through glasses - Middle: Passive 3D /


DirectX ® And Streaming Video Drivers Jeff Noyle, Development Lead Gary Sullivan, Software Design Engineer William Messmer, Software Design Engineer Eric.

 DVD DPXD graphic buffers  DVD highlight definition buffers  DVD display control command buffers  Alpha blend combination buffers Deblocking filter control buffers / H263_B profile needs:  Rounding control  Motion vectors over picture boundaries  8x8 motion vectors  Alternative inverse scan (or host inverse scan) H263_C profile needs: H263_C profile needs:  / lock/frame rate synchronization Gen lock/frame rate synchronization TV out control TV out control New GUIDs Reducing Memory Use Add three /


C2a Understanding of ICT Systems in Everyday Life.

Vector Images A vector graphics package, eg the drawing facility on Microsoft Word, produces images by storing shapes as mathematical formulas A vector/to connect telephone substations. Cable  Users who subscribe to a cable TV company such as NTL can connect to the internet using their cable/the virtual system. The user wears a head- mounted display through which the virtual world can be seen. Virtual / code is scanned by a laser scanner on the till. A products bar code is scanned by a laser/


1 Video Compression. 2 Video Compression Standards  JPEG: ISO and ITU-T  for compression of still image  Moving JPEG (MJPEG)  H.261: ITU-T SG XV 

, progressive scanning  Sub-QCIF (S-QCIF): 128 x 96  Progressive scanning, 15 / 7.5fps  Frame types  I, P, B frames 19 Picture Processing  Unrestricted motion vectors  For/ on the Internet  Collaborative scene visualization  High-quality broadcasting  Studio and TV post-production  Interactive movie, travel guide, computer-based teaching, Karaoke 54 MPEG/  Standardized by ISO/IEC/JTC1/SC29 WG12  Describes how video is displayed, audio is replayed and the means by which a user can interact with/


Lecture 07 Developing E-Business Sites. Lecture Overview Multimedia HW and SW requirement Designing Multimedia Text Font Sound Digital music, MIDI, and.

Original Purpose Director: CD-ROMs  web-centric (later version), bitmap-centric Flash: web-oriented solution, vector-centric Development Environments Delivery and Interactivity Pricing Matter Future Principles for Animation Supplies Theme/Story/Point Plan Download/ reading pattern ßUser’s eyes move from left to right and back again ßLandscape-based display (TV) ßUser’s may scan information following a clockwise pattern Paper-based reading pattern Landscape-based pattern Other Considerations ßLow bandwidth/


Concepts of Multimedia Processing and Transmission IT 481, Lecture #7 Dennis McCaughey, Ph.D. 19 March, 2007.

than R with G, R with Blue and Blue with G, thus reducing TV transmission bandwidths. Cb and Cr both require far less bandwidth and can be / –Motion Compensation Decision: The encoder has an option on whether to transmit motion vectors or not for predictive-coded macroblocks. –Intra/Non-intra Coding Decision Coded/Not /, Fall 2006 66 Progressive vs. Interlaced Scanning In the Interlaced video, each displayed frame consists of two interlaced fields, with the scanning lines in Field 1 located between the lines/


影像壓縮技術. Course Outline  Introduction  Video Coding  Motion Compensated Prediction & Color Format  JPEG/JPEG2000  H.261,H.263,H.263+,H.264  MPEG-1,-2,-4.

of error measurement (MSE,MAE,etc) MPEG Encoder Buffer Regulator Inverse Quantizer IDCT Predictor Frame Re-Order Motion Estimation + DCTQuantizer Variable Length Coding Multiplexing + Vectors Modes Source Input Picture + - + + MPEG Decoder Buffer Variable Length Decoding IDCT Adder Display Buffer Forward Motion Compensation Interpolated Motion Compensation Backward Motion Compensation Previous Picture Store Future Picture Store Decoded Video MPEG Picture Types Generated number of/


UNIT – I B ASIC C ONCEPTS A ND D EVICES. C OMPUTER G RAPHICS Computer Graphics - refers creation, storage and manipulation of pictures and images using.

standard-definition (SD) screen is 4:3 (means "4 to 3” ), which is a relatively square rectangle. High-definition TV (HDTV) has a 16:9 ratio, which is a widerectangle.HDscreens have resolution 1920X1880 pixels 4:3 16:9 Problem :/hole at the end of control grid. D ISPLAY T ECHNIQUES CRT monitors have two display methods : 1. Raster Scan Display 2. Vector Display / Random Scan displays These are based on the scan technology that is used to control the electron beam while generating graphics on the screen./


Digital Video Carnegie Mellon © © Copyright 2001 Michael G. Christel and Alexander G. Hauptmann Video Video comes from a camera, which records what it.

TV, NTSC, 15 bits/pixel of color depth, and 15 bits/pixel of color depth, and 525 lines of resolution 525 lines of resolution with 4:3 aspect ratio. with 4:3 aspect ratio. Scanning practices leave a smaller safe region. Display scan rate is differentDisplay scan/ movement to stabilize an image. It is also used to efficiently represent motion by storing the movement information (motion vector), for the block. When storing differences MPEG actually compares a block of pixels (macroblock) and if a difference /


T325: Technologies for digital media Second semester – 2011/2012 Tutorial 4 – Seeing and Hearing: Multimedia Output and Input Arab Open University – Spring.

pixels/line. Arab Open University – Spring 2012 42 Moving images are an illusion produced by displaying a series of still images or frames. TV frames are built up by scanning: writing a line at a time and moving down to the next line when a line / space by a set of three numbers, called a vector. An object described by a set of vectors can be translated, scaled or rotated by multiplying the vectors by a matrix to give a new set of vectors. Arab Open University – Spring 2012 51 Three-dimensional operations/


MULTIMEDIA TECHNOLOGIES. What is Multimedia ?? Multimedia is the field concerned with the computer-controlled integration of text, graphics, drawings,

them being in the same room. S TREAMING MEDIA Video on Demand Interactive TV Digital Transmission Can also be referred as Streaming Media = تدفق وسائل الاعلام Streaming/(uncompressed) are represented as a bitmap (a grid of pixels). Input : Scanned for photographs or pictures using a digital scanner or from a digital camera. May/are composed of either pixel or vector (geometric) data that are rasterized to pixels when displayed (with few exceptions) in a vector graphic display. IMAGE FILE FORMATS. JPEG/JFIF /


I N T R O D U C T I O N T O C O M P U T E R G R A P H I C S Andries van Dam September 7, 2004 Introduction 1/56 Introduction.

U T E R G R A P H I C S Andries van Dam September 7, 2004 Introduction 42/56 Vector (calligraphic, stroke, random-scan) –still used in some plotters Raster (TV, bitmap, pixmap), used in displays and laser printers Graphics Display Hardware I N T R O D U C T I O N T O C O M P U T E/


Metropolitan Community College Audio Video Production Engineering Part 2 Video Rev. 6c.

57 Basic TV Principles Video – The visible portion Sync – The housekeeping portion 58 Cameras and Monitors Many types of camera pick- up sensors (tubes, CCD, CMOS) Many display types (tubes, LCD, Plasma) 59 Image Capture Some type of scanning is required /http://link.brightcove.com/ services/player/bcpid4246 10616001?bctid=1155879 794001 (8:51) 100 Video Links Waveform Monitor video Vector scope video Monitor setup Applying WFM & VS Grey Card 101 Tektronix link 102 Grey Bar Tektronix link 103 Tektronix link/


Computer Graphics Chapter 2 Graphics Systems Andreas Savva.

When sound systems were developed in the 1920s, motion picture film rates increased to 24 frames per second removing flickering. – Today TV refresh rate is 25 frames per second in Europe and 30 frames per second in the USA. 16 The depth (or intensity/ called a pixmap. 20 Interlaced Raster Scan Displays Odd/even scan lines covered in successive refresh cycles. Hence 30 frames/sec refresh rate appears like 60 frames/sec. 1 2 3 4 5 6 0 21 Random-Scan (Vector) displays Vector stands for line. Developed in the /


Video Carnegie Mellon © Copyright 2000 Michael G. Christel and Alexander G. Hauptmann Video Video comes from a camera, which records what it sees as.

TV, NTSC, 15 bits/pixel of color depth, and 15 bits/pixel of color depth, and 525 lines of resolution 525 lines of resolution with 4:3 aspect ratio. with 4:3 aspect ratio. Scanning practices leave a smaller safe region. Display scan rate is differentDisplay scan/ movement to stablize an image. It is also used to efficiently represent motion by storing the movement information (motion vector), for the block. When storing differences MPEG actually compares a block of pixels (macroblock) and if a difference /


The Hardware And Software Used To Create And Edit Graphic Images

harder and you would need a TV which cant display resolution as well as monitors, the size of the resolution usually will not full the TV screen this is because they /So these two work well together. Scanner A scanner is commonly used to scan and display an image in a way that it is editable on the computer. There are/created by programs like Photoshop. These pictures demonstrate well the quality of Raster and vector. Vector All these websites where visited on 16/10/12 Bibliography http://en.wikipedia.org//


Communications Laboratory Lecture Series

. All Current Generation PCs use Progressive Do You Use A PC? All Current Generation PCs use Progressive Scan and display Pictures which match or exceed HDTV resolutions although the pixel pitch, aspect ratio and colorimetry are not correct/Vectors Chroma and Luma DCT Coefficients Variable Length Codes Packet Headers Flexible delivery of data Transport Layer DTTB is about layers. Picture Compression Transport/Multiplexing Transmission Video packet Audio packet Video packet Aux data MPEG-2 packets VHF/UHF TV/


March 1, 2009Dr. Muhammed Al-Mulhem1 ICS 415 Computer Graphics General Graphics Systems Dr. Muhammed Al-Mulhem March 1, 2009 Dr. Muhammed Al-Mulhem March.

framebuffer. Digital description to analog signal to digital display.Digital description to analog signal to digital display. Can a computer display work like a black and white TV? Solution: We need a special memory to /Early computer displaysEarly computer displays –avoided synchronization using ‘vector’ algorithm –flicker and refresh were problematic March 1, 2009Dr. Muhammed Al-Mulhem16 CRTs – A Review Raster Displays (early 70s)Raster Displays (early 70s) –like television, scan all pixels in regular/


www.smartphonetech.org Contents l Forms of Motion Picture l Multimedia products with Motion Picture Content l Motion Video Technology l Source for Motion.

scans the active surface horizontally and vertically just like in a TV monitor. n The scanning action generates the video signal proportional to the luminosity of the points scanned/smartphonetech.org Spatial Resolution and Bandwidth (contd) If processing, transmission or display bandwidth of the video signal is much below the video signal f /quality adjusted automatically to suit platform. l Latest :- real-time support and Vector graphics in QT3. n Special Animation files (FLI, FLC) www.smartphonetech.org/


APPROVAL SHEET DESCRIPTION : 16 X CCD COLOR CAMERA SET MODEL NO. : ONZ - AN101 /151/102/152 ( NTSC) ONZ - AP101 /151/102/152 ( PAL ) ISSUED CHECKED APPROVED.

ONZ - AN101/102 )PAL ( ONZ - AP101/102 ) Scanning System2 : 1 Interlace Scanning Frequency ( H )15.734 KHz15.625 KHz 59.94 Hz50 Hz/Digital Zoom 8X mode ; (Current Zoom : 100X ) Sharpness Adjustment Mode DISPLAY Brightness Adjustment Mode DISPLAY X10 X34 2/5 ONZ-AN101/151/102/152, AP101/151/102// V Color Monitor CMM20 - 11, Shibasoku or Equivalent Monochrome Monitor More than 800 TV Lines Horizontal Resolution Waveform Monitor / Vector Scope 1720A, Tektronix ( NTSC / EIA ) or Equivalent 1730A, Tektronix ( PAL/


© 2011 Pearson Addison-Wesley. All rights reserved. Addison Wesley is an imprint of Chapter 9 Other Peripherals The Complete A+ Guide to PC Repair 5/e.

TV. CRT LCD DLP Liquid Crystal Display – used in laptops, flat panel monitors, TVs, and projectors. Video Output Technology Digital Light Processing – used in projectors and rear projection TVs./screen is scanned in one second. Refresh Rate Horizontal Scanning Frequency The rate at which a CRT monitor beam moves across the screen. Vertical Scan Rate The/ more than dots creating an image. Raster Vector A font derived from a mathematical formula. Plotters frequently use vector fonts. True Type A type of outline/


I N T R O D U C T I O N T O C O M P U T E R G R A P H I C S Andries van Dam September 4, 2008 Introduction 1/59 Introduction.

E R G R A P H I C S Andries van Dam September 4, 2008 Introduction 45/59 Graphics Display Hardware Vector (calligraphic, stroke, random-scan) –still used in some plotters Raster (TV, bitmap, pixmap), used in displays and laser printers Ideal Drawing Vector Drawing Raster Outline primitives Filled primitives I N T R O D U C T I O N T O C/


Multimedia object types II: graphics and color ISMT Multimedia Dr Vojislav B Mišić.

compatibility with monochrome TV luminance (Y) channel – which old TV sets can use to display monochrome Y = /Vector image processing Color and palette changes quick and simple Geometrical operations (scaling, rotation, translation, … ) performed easily Objects added, deleted, or modified easily Objects can be ordered to change visibility The only choice for 3D scenes However: recalculation may be (and often is) computationally intensive ismt337: Graphics and Color/ 41 © 2001 Dr Vojislav B Mišić On scanning/


Media TechnologiesB.Sc.(Hons) Multimedia Computing Graphics Devices Principles and Image Structures.

display. Cheaper CRTs would not always support higher refresh rates. Display Devices Vector Displays (Random Scan) Raster Displays (Raster Scan) Media TechnologiesB.Sc.(Hons) Multimedia Computing Vector Scan Displays Vector Displays Media TechnologiesB.Sc.(Hons) Multimedia Computing Vector Displays Often referred to as Random Scan Devices, stroke- writing or calligraphic displays/.Sc.(Hons) Multimedia Computing Raster Scan Displays Based on TV Technology Electron beam sweeps scan lines row by row down the/


Introduction to Digital Imaging Learn iT! Fall 2000.

how to display the text and graphics Web Server stores: HTML Files tell your web browser how to display the web/Click drive transfers from card to click disks Printer, TV for direct outputPrinter, TV for direct output Learn iT! Introduction to Digital /Scan and useScan and use Scan as greyscale or black and whiteScan as greyscale or black and white Adobe Streamline useful for turning bitmapped scans into editable vector art in IllustratorAdobe Streamline useful for turning bitmapped scans into editable vector/


INTRODUCTION TO COMPUTER GRAPHICS

to be produced. This technique is also called vector drawing or stroke writing or calligraphic display. Figure: Drawing a triangle on a Raster Scan Display Figure :Drawing a triangle using Random Scan Display Direct View Storage Tube : Though the vector drawn images lack in depth and real- like colour precision, the random display can work at higher resolution than raster displays. The images are sharper and have smooth edges/


Multimedia Processing Lab NH 140 Advisor : Dr. K.R. Rao Phone : (817) 272-3478 Website:

VP8Broadcasting2008 RV10 (Real Networks)Internet streaming2008 AVS ChinaIP TV, Terrestrial digital TV, Satellite broadcast, Video surveillance 2005 H.264 Fidelity/-VLC and Arithmetic Coding – In-loop deblocking filter – Motion vector prediction –Adaptive scan – HD broadcasting – High density storage media – Video surveillances /video output (HDR storage/display) LDR video output (conventional display) Future Standards Activities – 3D Video Consumer Electronics auto-stereoscopic display, 10+ views required /


1 In the name of God Computer Graphics. 2 Image Mathematical Model Image Analysis (pattern recognition) Image Synthesis (Rendering) ModelingImage processing.

Basics DP DVST (Direct View Storage Tube) Refresh Display Raster - Scan Display Others CPU DP Memory Hard Copy Display Input CRT Displays 22 Why DP ? –Scan conversion –Refreshing screen –Interfacing with interactive input devices –Raster operations –Character generation –Additional functions CPU DP Memory Input CRT DP (Display Processor) 23 CPU DPU Refresh buffer Input (Display file) CRT Refresh CRT (Vector CRT) 24 CPU DPU CRT Input devices Flood Gun/


Graphics System Overview Sang Il Park Sejong University Most of the slides are taken from Jehee Lee’s.

list of line endpoints was used to move the electron beam along some random path, a so- called vector scan. Raster displays (TVs etc) drive the beam in a regular pattern called a raster scan. Vector displays are almost extinct. Scan conversion: convert geometric primitives from vector scan descriptions (endpoints etc.) to raster scan descriptions (sets of pixels to turn on.) Frame Buffers The 2-D array of pixel values is/


Graphics System Overview Kulraj Singh IP university.

list of line endpoints was used to move the electron beam along some random path, a so- called vector scan. Raster displays (TVs etc) drive the beam in a regular pattern called a raster scan. Vector displays are almost extinct. Scan conversion: convert geometric primitives from vector scan descriptions (endpoints etc.) to raster scan descriptions (sets of pixels to turn on.) Frame Buffers The 2-D array of pixel values is/


Computer Graphics Chapter 2 Graphics Systems. 2 Development of Hardware Hardware evolution had a greater influence in the development of Computer Graphics.

RGB-color systems), there are 24 (or more) bits per pixel in order to display sufficient colors to represent most images realistically. 16 Raster Scan Displays They are based on TV technology Refresh rate = 60 to 80 frames per second. Note: Below 24 frames/second/-bit intensity is called a bitmap. The frame-buffer with multiple-bits intensity is called a pixmap. 17 Random-Scan (Vector) displays Vector stands for line. Developed in the mid-sixties and in common use until the mid-eighties. The electron beam /


Computer Graphics CSE167: Computer Graphics Instructor: Steve Rotenberg UCSD, Fall 2005.

red, green, and blue subpixels. If you look very closely at a TV screen or computer monitor, you will notice the pattern of subpixels Older style vector displays didn’t display a grid of pixels, but instead drew lines directly with an electron / output of the clipping/culling process is a set of visible triangles that lie within the dimensions of the display device Scan Conversion The scan conversion (or rasterization) process takes 2D triangles as input and outputs the exact pixels covered by the triangle/


Computer Graphics: It’s not just Photoshop Anymore Presented by Jack Tovey Presented by Jack Tovey.

than the one we grew up in. It’s a 600-channel TV universe. It’s a 10,000 station radio universe accessible online. It/motion design artists create the graphics used in multimedia or television broadcasting to display sports statistics, animated logos, and advertising. CG programmers create the coding instructions/objective works of art drawing directly on the computer and/or with scanned images using the following software: Vector Graphic Software: Examples: Adobe Illustrator, Corel Draw Bit Mapped or/


COM 205 Multimedia Applications St. Joseph’s College Fall 2004.

Scanning Images Everyday objects can be scanned and manipulated using tools such as Photoshop Traditional artwork created with pen and ink or watercolors can be created and scanned Vector Drawings Vector graphics are defined using formulas –RECT 0,0,200,200,RED,BLUE Vector/Monitors and Color – most monitors today are set to display 640 X 480 pixels and 256 colors, can be /–Describes colors that emanate from glowing bodies such as lights, TV, and computer monitors In additive color models, mixing two colors/


Introduction to Multimedia. 1- What is Multimedia? 2- Multimedia and Hypermedia 3- World Wide Web 4- Overview of Multimedia Software Tools.

time to display complex image. Vector Graphics vs Images Graphic (WMF) : 10262 bytes Image (BMP) : 51054 bytes enlarg e Vector Graphics Examples/-line reference works: e.g. encyclopedias, games, etc. - Home shopping. - Home shopping. - Interactive TV. - Interactive TV. - Multimedia courseware. - Multimedia courseware. - Video conferencing. - Video conferencing. - Video-on-demand. -/from analog source to digital representation. The will involve scanning (graphics, still images), sampling (audio/video) although/


COM 205 Multimedia Applications St. Joseph’s College Fall 2004.

Scanning Images Everyday objects can be scanned and manipulated using tools such as Photoshop Traditional artwork created with pen and ink or watercolors can be created and scanned Vector Drawings Vector graphics are defined using formulas –RECT 0,0,200,200,RED,BLUE Vector/Monitors and Color – most monitors today are set to display 640 X 480 pixels and 256 colors, can be /–Describes colors that emanate from glowing bodies such as lights, TV, and computer monitors In additive color models, mixing two colors/


A Brief Overview of the MPEG2 Standard Dr. David Corrigan.

Huffman + Run Length Coding.  But it is not that simple  motion vectors need to be coded, we may need to include direction prediction information  must / Block Layer (Scan Order) Scan Order for Progressive VideoScan Order for Interlaced Video The Block Layer (Scan Order)  /displayed in a certain order in the receiver.  The MPEG 2 Part 1 (Systems) standard specifies two different ways of doing this  Program Stream (PS) – used for reliable media such as DVDs  Transport Stream (TS) – used for Digital TV/


Rajamangala Institute of Technology 1 Computer Graphics Hardware Input/Output Technologies.

3 primaries. –Light Orange = 100% R + 50% G + 20% B Rajamangala Institute of Technology 10 Vector Display Devices A.K.A. Vector Scan Displays, Random Scan Devices, Line Plotters The electron beam directly draws the picture e.g. DrawLine(A, B): Turn beam off, /values commonly called a pixelmap (or bitmap) Rajamangala Institute of Technology 14 Raster Scan Devices Scans the screen from top to bottom in a regular pattern (common TV technology) A Raster is a matrix of pixels (picture elements) covering the /


CG Architectures, Image Formation, and Models Angel, Chapter 1 CSCI 6360/4360.

History, for completeness Two classes of output technology Vector (calligraphic, stroke, random­scan) –Still used in some plotters –Historical Raster (TV, bitmap, pixmap), –Used in displays and laser printers –“dots” –Picture elements - pixels Vector Architecture Historic in interactive displays However, useful in understanding some, now, software terminology Vector display works with a display list/file stored in refresh buffer Display controller draws all vectors at < 60 Hz –often at variable rate/


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