Bilgisayar Grafiğine Giriş CS 351

Bilgisayar Grafiği Nedir? Geometrik şekillerin Üretilmesi, İşlenmesi ve Depolamasıdır. Cisimlerin bilgisayar ekranında görüntülenmesidir. Resimleri hayal etme ve işlemedir Sayısal verilerin görselleştirilmesidir

Film Endüstrisi Slide information from Leonard McMillian's slides http://www.cs.unc.edu/~mcmillan/comp136/Lecture1/compgraf.html

Oyun Endüstrisi Slide information from Leonard McMillian's slides http://www.cs.unc.edu/~mcmillan/comp136/Lecture1/compgraf.html

Tıp dünyası Nanomanipulator, UNC Joe Kniss, Utah Gordon Kindelman, Utah

Bilgisayar Destekli Tasarım ProEngineer, www.ptc.com

Atmosfer Bilimleri

Bilgisayar Grafiği Nedir? Donanım İşleme Etkileşim Modelleme Bilimsel Görselleştirme Slide information from Richard Riesenfeld

Hızla Değişen Donanım CPU ve GPU daki değişimler

İşleme Çoğu düşünce ve hayaller Bilgisayarda işleme ile yapılmaktadır. Efektler verilmektedir

Resim İşleme, efektler Sabah Akşam üstü a preetham, et. al., utah

Resim işleme Yapma Gerçek Shirley, et. al., cornell

Sizce bu resim gerçekmidir? m fajaro, usc

Arazi Modellemesi: Kar örtüsü ve Ağaçlar eklendi s premoze, et.al., utah

Büyüme Modelleri o deusson,

İşlenmiş, modellenmiş saçlar http://www.rhythm.com/~ivan/hairRender.html

Gerçekmi?

Gölgeleme a gooch, et. al., utah

Gerçekçi olmayan işlemeler

3 Boyutlu manzaralar Fuchs et.al., UNC UNC and UVA

360o lik tarama p willemsen, et. al., utah

Etkileşim

Modeller oluşturma

Modeller oluşturma D Johnson and J D St Germain, Utah Russ Fish et al., Utah

Bilimsel Görselleştirme Johnson et al., Utah

göz yapay kamera

Up vector Width angle Look vector Height angle Front clipping plane Back clipping plane Position

Position Determining the Position is analogous to a photographer deciding the vantage point from which to shoot a photo Three degrees of freedom: x, y, and z coordinates in 3- space This x, y, z coordinate system is right-handed: if you open your right hand, align your palm and fingers with the +x axis, and curl your middle finger towards the +y axis, your thumb will point along the +z axis This is a left-handed coordinate system. Not used in 123.

point to look at (x’, y’, z’) Orientation Orientation is specified by a point in 3D space to look at (or a direction to look in) and an angle of rotation about this direction Default (canonical) orientation is looking down the negative z-axis and up direction pointing straight up the y-axis In general the camera is located at the origin and is looking at an arbitrary point with an arbitrary up direction -z z y x Up vector point to look at (x’, y’, z’) Look vector camera Position

View Angle (1/2) Determines amount of perspective distortion in picture, from none (parallel projection) to a lot (wide-angle lens) In a frustum, two viewing angles: width and height angles Choosing View angle analogous to photographer choosing a specific type of lens (e.g., a wide-angle or telephoto lens) Width angle Height angle

View Angle (2/2) Resulting picture

Front and Back Clipping Planes Volume of space between Front and Back clipping planes defines what camera can see Position of planes defined by distance along Look vector Objects appearing outside of view volume don’t get drawn Objects intersecting view volume get clipped

Position Projection of up vector Up vector