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Computer Graphics 3D Display

Ming-Te Chi Department of Computer Science  National Chengchi University. Computer Graphics 3D Display. Outline. 3D Display Concept 3D Viewer Categories 3D Display Device Overview 3D Display Device Setting Simple 3D Project Google Sketch Up. Depth perception.

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Computer Graphics 3D Display

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  1. Ming-Te Chi Department of Computer Science  National Chengchi University Computer Graphics3D Display

  2. Outline • 3DDisplay Concept • 3D Viewer Categories • 3DDisplay Device Overview • 3DDisplay Device Setting • Simple 3D Project • Google Sketch Up

  3. Depth perception • Depth sensation is the ability to move accurately, or to respond consistently, based on the distances of objects in an environment • binocular cues • monocular cue

  4. Binocular cues • Stereopsis or retinal(binocular) disparity • Convergence • Shadow Stereopsis Left eye Right eye

  5. Stereoscopic • Stereoscopic technology provides a different image to the viewer's left and right eyes.  View of Boston, c. 1860

  6. Categories of 3D viewer technology With glasses • Active • Liquid crystal shutter glasses • Passive • polarized glasses • Complementary color anaglyphs • Head-mounted display

  7. Without glasses • Wiggle stereoscopy • Autostereoscopy • Parallax barrier • Lenticular lens

  8. 3DDisplay Device Overview • 3D Monitor Device • 3D Monitor from iZ3D • SAMSUNG SyncMaster 2233RZ • Acer GD245HQ • 3D Glasses • NVIDIA3D Vision glasses • Polarizing glasses

  9. Complementary color anaglyphs • 顏色過濾原理 • 左”紅”右”藍” • 缺點:灰階 or 單一色調

  10. iZ3D Monitor with Polarizing glasses • “兩層”偏光面板，前面板與後面板 分別顯示左、右眼影像 • 若同分別使用”左”，”右”兩眼觀看，成像效果不同

  11. SAMSUNG SyncMaster 2233RZ with NVIDIA 3D Vision glasses 技術原理 實際畫面

  12. Acer GD245HQ with NVIDIA 3D Vision glasses 系統需求與限制 • 120Hz Refresh Rate • nVidia Graphics Card • OS:Windows Vista / 7 Input • 3D攝影機 Output • 3D Vision Photo Viewer • NVIDIAStereoPlayer 實際畫面

  13. OpenGL Quad Buffer glClear(); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); /* the default matrix */ glPushMatrix(); glDrawBuffer(GL_BACK_LEFT); gluLookAt(-IOD/2.0, 0.0, EYE_BACK, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0); <viewing transforms> <modeling transforms> draw(); glClear(); glPopMatrix(); glPushMatrix() glDrawBuffer(GL_BACK_RIGHT); gluLookAt(IOD/2.0, 0.0, EYE_BACK, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0); <viewing transforms> <modeling transforms> draw(); glPopMatrix(); glutSwapBuffer();

  14. Anaglyph Glasses • glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); • glColorMask(GL_TRUE, GL_FALSE, GL_FALSE, GL_TRUE); • // set camera for blue eye, red will be filtered. • // draw scene • glClear(GL_DEPTH_BUFFER_BIT); • glEnable(GL_BLEND); • glBlendFunc(GL_ONE, GL_ONE); • glColorMask(GL_FALSE, GL_FALSE, GL_TRUE, GL_TRUE); • // set camera for red eye, blue will be filtered. • // draw scene

  15. Simple 3D Project 下載範例程式 • http://www.cs.nccu.edu.tw/~mtchi/cg11/ 直接執行Originalfolder中.exe執行檔 嘗試利用CodeBlock編譯此專案 並找出此程式如何製作出紅藍立體效果

  16. Model Editing Software • Autodesk • 3ds Max • Maya http://www.autodesk.com.tw/adsk/servlet/home?siteID=1170616&id=15814201 • Google Sketchup http://sketchup.google.com/ • Blender http://www.cs.nccu.edu.tw/~g9902/blender/

  17. Google Sketch Up • Sketch UP provides an intuitive modeling • Toolbars

  18. Google Sketch Up • Translate Scale • Rotate

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