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Семестр 1 лекция 2 - проективная геометрия.pptx

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Введение в техническое зрение Введение в техническое зрение

Проективная геометрия и модели камеры Проективная геометрия и модели камеры

Изображение – отображение сцены на плоскости Изображение – отображение сцены на плоскости

Figure by David Forsyth Figure by David Forsyth

Slide from Efros, Photo from Criminisi Slide from Efros, Photo from Criminisi

Соотнесение множества видов Соотнесение множества видов

Распознавание объектов (CVPR 2006) Распознавание объектов (CVPR 2006)

Дополненная реальность (SIGGRAPH 2007) Дополненная реальность (SIGGRAPH 2007)

Slide by Steve Seitz Slide by Steve Seitz

Slide by Steve Seitz Slide by Steve Seitz

Adding a lens Adding a lens

Focal length, aperture, depth of field Focal length, aperture, depth of field

Depth of field Depth of field

Shrinking the aperture Slide by Steve Seitz Shrinking the aperture Slide by Steve Seitz

Shrinking the aperture Slide by Steve Seitz Shrinking the aperture Slide by Steve Seitz

Capturing Light… in man and machine Capturing Light… in man and machine

Image Formation Image Formation

A photon’s life choices A photon’s life choices

A photon’s life choices A photon’s life choices

A photon’s life choices A photon’s life choices

A photon’s life choices A photon’s life choices

A photon’s life choices A photon’s life choices

A photon’s life choices A photon’s life choices

A photon’s life choices A photon’s life choices

A photon’s life choices A photon’s life choices

A photon’s life choices A photon’s life choices

A photon’s life choices A photon’s life choices

Lambertian Reflectance Lambertian Reflectance

Обратная трассировка лучей Обратная трассировка лучей

Digital camera Slide by Steve Seitz Digital camera Slide by Steve Seitz

Sensor Array Sensor Array

Sampling and Quantization Sampling and Quantization

Interlace vs. progressive scan http: //www. axis. com/products/video/camera/progressive_scan. htm Slide by Steve Seitz Interlace vs. progressive scan http: //www. axis. com/products/video/camera/progressive_scan. htm Slide by Steve Seitz

Progressive scan http: //www. axis. com/products/video/camera/progressive_scan. htm Slide by Steve Seitz Progressive scan http: //www. axis. com/products/video/camera/progressive_scan. htm Slide by Steve Seitz

Interlace http: //www. axis. com/products/video/camera/progressive_scan. htm Slide by Steve Seitz Interlace http: //www. axis. com/products/video/camera/progressive_scan. htm Slide by Steve Seitz

Rolling Shutter Rolling Shutter

The Eye Slide by Steve Seitz The Eye Slide by Steve Seitz

The Retina The Retina

What humans don’t have: tapetum lucidum What humans don’t have: tapetum lucidum

Rod / Cone sensitivity Rod / Cone sensitivity

Eye Movements Eye Movements

Electromagnetic Spectrum Electromagnetic Spectrum

Impossible Colors Impossible Colors

Tetrachromatism Tetrachromatism

More Spectra More Spectra

Slide by Steve Seitz Slide by Steve Seitz

Color Image Color Image

Images in Matlab Images in Matlab

Color spaces Color spaces

Color spaces: RGB Image from: http: //en. wikipedia. org/wiki/File: RGB_color_solid_cube. png Color spaces: RGB Image from: http: //en. wikipedia. org/wiki/File: RGB_color_solid_cube. png

Color spaces: HSV Color spaces: HSV

Color spaces: YCb. Cr Color spaces: YCb. Cr

Color spaces: L*a*b* Color spaces: L*a*b*

Most information in intensity Most information in intensity

Most information in intensity Most information in intensity

Most information in intensity Most information in intensity

Back to grayscale intensity Back to grayscale intensity