Media Components.


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Media Components ITK-352 Goals comprehend the nuts and bolts of various media components know how to catch diverse media sorts for incorporation in mixed media Sight and sound Components
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Media Elements ITK-352

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Objectives comprehend the fundamentals of diverse media components know how to catch diverse media sorts for incorporation in sight and sound

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Multimedia Elements The development of superb interactive media items depends upon the effective combination of a progression of sorts of unmistakable information. Text -Animation Audio -Other Video Images

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Multimedia The incorporation of sound, feature, PC illustrations and content under PC control. A multi-tactile affair

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Data Types - Classified by the faculties Sight Writing, Painting, Photography augmentation of sight after some time and space TV, Video-conferencing expansion of sight crosswise over space

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Percentage of Cones Red (64%) Green (32%) Blue (4%) http://www.siggraph.org/instruction/materials/HyperGraph/shading/coloreff.htm

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Color Blind

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The person with ordinary shading vision will see a 5 uncovered in the speck design. A person with Red/Green (the most widely recognized) visual impairment will see a 2 uncovered in the dabs.

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Blue sort on red is difficult to peruse. It reasons eye strain.

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Red sort on blue is additionally difficult to peruse. It reasons eye strain. strain.

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Green sort on red is additionally difficult to peruse. It reasons eye strain. strain.

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Order in which hues shows up The apparent contrasts inside and out ( chromostereopsis ) that outcome can moderate perusing speed extensively.

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Graphics Bitmmaped/Raster Monitors , ( RGB ) Vector Graphics Hybrid/Metafiles

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Bitmaps Common employments of bitmap design include: Photographic pictures Paintings and drawings Document checks

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Bitmap

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True Color

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Pseudo-Color (CLUT)

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Dither It reproduces the hues from the orginal picture that are not accessible in the new, lessened palette.

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Vector Graphics

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Vector Graphics

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Vector Graphics Demo Cards Dragon

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Vector Graphics Common employments of vector representation: CAD/CAM bundles Architectural arrangements Diagrams Route arranging

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Demo: 3D/FX

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Anti-associating A procedure utilized on a dim scale or shading bitmap presentation to make corner to corner edges seem smoother by setting pixels close to the edge to middle of the road hues as indicated by where the edge crosses them.

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Image Quality The quality with which a picture is shown on a PC scene is subordinate upon a few variables: The first\'s nature picture The way the picture was caught The shading profundity of the picture The illustrations arrangement used to store it The kind of pressure utilized Lossy versus Lossless The representation card on the PC The PC\'s nature screen

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Resolution the greatest number of pixels that can be shown on a screen, communicated as (number of flat pixels) x (number of vertical pixels). i.e., 1024x768. The proportion of flat to vertical determination is normally 4:3, the same as that of traditional TV sets.

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Image File Formats GIF (Compuserve) JPG (Joint of Photographers Expert Group) PNG (Portable Network Graphics) DIBs (Device Independent Bitmaps) BMP, DIB, RLE PCX (PC PaintBrush) TIFF (Tagged Interchange File Format) PSD (Adobe Photoshop)

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Cross-Platform Formats DXF (Drawing Interchange File) IGES (Initial Graphics Exchange Standard) Most normal bitmap designs on the Web JPEG GIF PNG

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Senses: Hearing and discourse augmentation of hearing crosswise over space Telephone, radio expansion of hearing after some time CDs, tapes, voice message, telephone…

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Sound For sound to exist to us, three things are vital: Generation Transmission Perception

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Digital Audio Jargon Amplitude demonstrates the sound\'s volume; so the focuses in a waveform with the best plentifulness sound the loudest. Period speaks to the separation between two sequential crests in a waveform . Recurrence is the quantity of periods in one second.

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Audio Jargon Hertz (Hz) A hertz is comparable to a period. One period for every second equivalents one hertz. One thousand periods for every second equivalents one kilohertz (KHz).

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Sound Volume: dB Volume or tumult: (Unit of estimation: decibels, dB) This is the sound\'s weight. Decibels are the proportion between a reference purpose of a logarithmic scale and the level that is really gotten.

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An increment of 10 dB is twice as boisterous Human discourse is for the most part imitated some place in the 55 to 70 dB range. The upper SPL of music will ordinarily go from 65 to 90 dB.

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size of Sound Pressure Levels (SPL). The louder a specific sound, the higher it will be on the vertical scale. SPL http://www.soundinstitute.com/article_detail.cfm/ID/106

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Dynamic extent Dynamic reach is the reach between the gentlest and loudest sounds. music has a much more prominent element range than discourse. http://www.soundinstitute.com/article_detail.cfm/ID/106

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Audio Sampling

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Audio Files MIDI (Musical Instrument Digital Interface): An industry-standard association for PC control of musical instruments and gadgets. A MIDI document contains notes, timing, and instrument assignments for different channels. The document contains data about every note, including the key, channel number, length of time, volume, and speed.

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Audio Files RIFF (Resource Interchange File Format) Platform-free mixed media detail distributed by Microsoft and others in 1990 that permits sound, picture, activity, and other sight and sound components to be put away in like manner arrangement. WAV (Wave File Format) MP3 (MPEG – 1, Audio Layer 3)

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WAV record

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Audio - Space Requirements The accompanying equation can serve to gauge sound stockpiling needs. (testing rate * bits per test)/8=bytes/sec

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Audio Files: MP3 . Is the document augmentation for MPEG, sound layer 3. Layer 3 utilizes perceptual sound coding and psychoacoustic pressure to uproot all pointless data (all the more particularly, the excess and superfluous parts of a sound sign. The stuff the human ear doesn\'t hear in any case). Layer 3 contracts the first solid information from a CD (with a *bitrate of 1411.2 kilobits for each one second of stereo music) by a variable of 12 (down to 112-128kbps) without yielding sound quality.

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Audio Files: . WMA Microsoft/WMA W indows M edia A udio, a Microsoft record design for encoding advanced sound documents like MP3 however can pack documents at a higher rate than MP3. WMA records, which utilize the “.wma” document augmentation, can be of any size packed to coordinate a wide range of association rates, or data transmissions.

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Audio Files: AAC A dvanced A udio C oding, one of the sound pressure organizations characterized by the MPEG-2 standard. AAC is once in a while alluded to as MPEG-2 NBC (not in reverse good) in light of the fact that it is not perfect with the MPEG-1 coding plan. AAC gloats higher quality sound generation than MP3 and requires 30% less information to do as such.

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Touch Haptic interfaces (augmentation of touch over space) Sculpture (expansion of touch after some time) http://wearable.www.media.mit.edu/ventures/wearables/timeline.html

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Cybergrasp power criticism glove

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Haptic Interfaces

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Smell expansion of smell over space and time Perfume Electronic Noses use sensors to distinguish gasses. The sensor exhibit may deliver an interesting unique mark of a scent. Sensorama (1960)

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Text Lexical \'one decides for every word its definition\' Syntactic \'the subject, activity, and object of a sentence is resolved\' Semantic \'the significance of a sentence is resolved\' Pragmatic \'the content\'s reconciliation semantic importance into the peruser\'s model of self and of the world\'

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Text Standards ASCII, EBCDIC ISO 10646 In 1983 the International Standards Organization began improvement of ISO 10646 which is a standard for encoding characters. The point of this was to build up a 2-byte (16-bit) character set which could manage up to 65,536 characters. Unicode In 1987 Mark Davis of Apple Computers and Joe Becker and Lee Collins at Xerox PARC set forward Unicode which was to take into account \'one of a kind, all inclusive, and uniform character encoding.\'

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Text Acquisition Keyboarding Bulk content stacking ASCII RTF (Rich Text Format) SGML ODA (Open Document Architecture) XML VoiceXML

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OCR Optical Character Recognition (1974) Ray Kurzweil created his first perusing machine for the visually impaired By 1978 the Kurzweil\'s perusing machine was produced for information section applications.

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OCR Factors to consider when analyzing OCR for utilization in your own applications include: Speed of catch Accuracy rates Material took care of Customization systems OCR versus Bitmapped content

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Text - Fonts Bitmapped content Predefined size weight

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Text - Fonts Outline (vector) Fonts Page Description Language (PDL) PostScript TrueType Scalable

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Text Guidelines Headings, credits, depictions, key focuses Things to consider: Keep it straightforward, Don\'t utilize language Generally, you ought to utilize a most extreme of three typefaces in a greatest of three focuses sizes. Content ought to be set in fitting organizations, that is, set content flush left, set numbers flush right, maintain a strategic distance from focused content in records, and stay away from short advocated lines of content.

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Text Guidelines For settled width textual styles, supported lines of content can moderate perusing rate by 12 percent. This is a case of an altered width textual styles This is a case of variable-width text styles Use capitalized and lowercase characters at whatever point conceivable, that is, stay away from every single capital line of content, which can likewise m

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