Transcript DIGITAL IMAGING - S.SELVAGANAPATHY., ASST.PROF., MCA

DIGITAL IMAGING
OBJECTIVE:
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EQUIPMENTS YOU NEED .
INFO., RECORDING IN COMPUTER.
OBJECTS FOR STORING IMAGES.
BASICS OF IMAGE EDITING AND MANIPULATION.
USE OF DRAW AND PAINT TOOLS.
SCANNING, IMAGE RESOLUTION, AND RESIZING
IMAGE FILE FORMATE.
USE OF FILTERS.
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PICTURES INTO PIXELS
BITS AND BYTES
BASIC EQUPIMENTS
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IMAGE STORING EQUPIMENTS
COMPRESSION S/W
IMAGE CAPTURING EQUPIMENTS
IMAGE DISPLAY DEVICES
IMAGE TRANSMISSION DEVICES
INFORMATION RECORDING.
• BIMAPPED
• VECTOR GRAPHICS
CREATING 2-D IMAGES
• PAINTING TOOLS:-PENCIL,AIRBRUSH,PAINTBRUSH,,LINE,
BUCKET,GRADIENT,RUBER STAMP.
• DRAW TOOLS:-LINE,RECTANGLE,CIRCLE,CURVE, FREEFORM,
AND POLYGON.
• EDITING TOOLS:-ERASER,COPPING,MARQUEE, MAGIC WAND,
LASSO,EYEDROPPER,SMUDGE, FOCUS, AND TONING.
• TYPE TOOL
• SELECTION TOOLS:-MAGIC WAND,MOVE, AND RECTANGLAR
AND ELLIPTICAL MARQUEES.
IMAGE ACQUISITION
• SCANNING BASICS:– DETERMINE WETHER THE IMAGE WILL BE PRINTING OR
DISPLAYING IN A MONITOR OR PROJECTOR.
– SELECT THE AREA TO SCAN.
– DECIDE THE SCANNING RESOLUTION OF THE RESULTING
DIGITIZED FILE.
– DECIDE THE AMOUNT OF LIGHT AND CONTRAST DESIRED
FOR THE RESULTING IMAGE.
– DETERMINE THE COLOR CASTS YOU WANT TO ELIMINATE
DURING THE SCAN.
SCANNING RESOLUTION AND RESIZING
• THE AMOUNT OF STORAGE SPACE YOU HAVE IN THE
COMPUTER.
• THE USE FOR DIGITIZED IMAGE.
• HOW MUCH MANIPULATION OR EDITING THE IMAGE NEEDS
TO GO THROUGH TO REACH THE DESIRED SIZE, QUALITY,
AND EFFECT.
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BIT RESOLUTION OR COLOR RESOLUTION.
DEVICE RESOLUTION OR OUTPUT RESOLUTION.
SCREEN RESOLUTION.
IMAGE RESOLUTION.
SAVING AND EXPORTING IMAGES
TYPES OF IMAGE EXTENSIONS:WINDOWS BITMAP:DRAWING EXCHANGE FILE:ENCAPSULATED POSTSCRIPT:GIF:GEM FILE:INTERNAL GRAPHICS EXCHANGE:JPEG:MPEG:PLOT FILE:AUTOCAD:-
BMP,DIB.
DXP.
EPS,EPSF.
GIF.
IMG.
IMG,IGES.
JPG,JPEG.
MPEG,MPG
PLT.
DWG.
PHOTO CD:PICT/PICT2:TARGA:MS WORD METAFILE:WORD PERFECT GRAPHICS:TIFF:-
PCD.
PCT,PICT.
TGA.
WMF.
WPG.
TIF.
EDITING AND MANIPULATION BASICS
• CROPPING
• OUTPUT LEVEL,BRIGHTNESS AND CONTRAST
CORRECTIONS.
– OUT PUT LEVEL CORRECTION.
– BRIGHTNESS AND CONTRAST CORRECTIONS.
– USING FILTERS TO MODIFY IMAGES