'Diffuse reflection' diaporamas de présentation

BMFB 4283 NDT & FAILURE ANALYSIS

BMFB 4283 NDT & FAILURE ANALYSIS . Lectures for Week 4 Prof. Qumrul Ahsan , PhD Department of Engineering Materials Faculty of Manufacturing Engineering. Issues to address. 4.0 Ultrasound 4.1 Introduction 4.2 Theory 4.3 Equipment 4.4 Inspection Principles 4.5 Applications .

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Chapter 9

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Chapter 35

Chapter 35. The Nature of Light and the Laws of Geometric Optics. The Nature of Light. Before the beginning of the nineteenth century, light was considered to be a stream of particles The particles were either emitted by the object being viewed or emanated from the eyes of the viewer

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Reflection and Refraction

Reflection and Refraction. Reflection. Reflection occurs when light bounces off a surface. There are two types of reflection Specular reflection Off a shiny surface Diffuse reflection Off a rough surface. Ray tracing.

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Computer Graphics 16: Illumination

Computer Graphics 16: Illumination. Contents. Today we will start to look at illumination models in computer graphics Why do we need illumination models? Different kinds of lights Different kinds of reflections Basic lighting model. Why Lighting?.

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Chapter 22

Chapter 22. Reflection and Refraction of Light. A Brief History of Light. 1000 AD It was proposed that light consisted of tiny particles Newton Used this particle model to explain reflection and refraction Huygens 1678 Explained many properties of light by proposing light was wave-like.

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Light and Sound

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Light

Light. Chapter 13. Ch13 Sec 1 The Behavior of Light. Light and Matter. Objects must reflect light to be seen. Opaque materials do not allow light to pass through them; they only absorb and reflect light. Light and Matter. Objects must reflect light to be seen.

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Today

Today. Photorealistic rendering Algorithms for producing high-quality images Ways of deciding which algorithm for use. Lighting Revisited. Some applications are intended to produce pictures that look photorealistic, or close to it The image should look like a photograph

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SI31 Advanced Computer Graphics AGR

SI31 Advanced Computer Graphics AGR Ken Brodlie kwb@comp.leeds.ac.uk Lecture 1 - Overview Objectives To understand how 3D scenes can be modelled - in terms of geometry, appearance and behaviour - and rendered on a display

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Texturing

Texturing. CMSC 435/634. What is Texturing?. Texture Mapping. Definition: mapping a function onto a surface; function can be: 1, 2, or 3D sampled (image) or mathematical function. Mapped Parameters. Surface color ( Catmull 74) Specular reflection ( Blinn and Newell 76)

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Reflection and Refraction

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Texturing

Texturing. What is Texturing?. Texture Mapping. Definition: mapping a function onto a surface; function can be: 1, 2, or 3D sampled (image) or mathematical function. Mapped Parameters. Surface color ( Catmull 74) Specular reflection ( Blinn and Newell 76)

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OBJECTIVES

OBJECTIVES. 1) Trace light rays as they reflect from a plane mirror. 2) Draw conclusions about the law of reflection. 3) Identify angle of incident and angle of reflection. 4) State the laws of reflection of light. Using ray boxes. Reflection. Draw around the mirror. Reflection. normal.

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Chapter 18: The Electromagnetic Spectrum and Light

Chapter 18: The Electromagnetic Spectrum and Light. Section 3: The Behavior of Light Section 4: Color. The Behavior of Light. You are only able to see objects if they reflect some light back to your eyes. All objects either absorb, reflect or transmit (let light pass through) light.

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Reflection

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How Light interacts with objects

How Light interacts with objects. Terms for how objects interact with light. Opaque : Light is completely absorbed or reflected by object. No light passes through. E.g. a brick wall Transparent : all light is transmitted . The object is see-through. E.g.Glass .

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11.6 The Laws of Reflection

11.6 The Laws of Reflection. The angle of incidence equals the angle of reflection The incident ray, the reflected ray, and the normal are all in the same plane. Reflecting Light Off Surfaces. Specular Reflection: reflection off a smooth/shiny surface.

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Chapter 26 Geometrical Optics

Chapter 26 Geometrical Optics. The Reflection of Light. If a stone is dropped into a pond, circular waves emanate from the point where it landed. Rays, perpendicular to the wave fronts, give the direction in which the waves propagate.

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