Presentation on theme: "Freshman Imaging Project"— Presentation transcript:
1Freshman Imaging Project 2010-11 Here, lets talk about who we are. Freshman Imaging Science Students in a new required year-long class for all freshman imaging science students. Give us an imaging device to learn about, create, and advance. hi
2Polynomial Texture Maps (PTMs) Pioneered by Tom Malzbender of HP Labs in 2001Displays an object so the user can control where the light is coming fromBy viewing an object from different angles of illumination, surface textures become more visible. Currently, there are many applications of PTMsSTATE applications of PTMs
4Pixel colors can be represented numerically There is a mathematical relationship between pixel color and illumination angleKnowing color at several angles allows us to predict color at all anglesLight source 1digital images represented mathematically camera looking at a scene... the color will look like it does in 1..change the lighting the color change is like 2...this phenomenon and representing it mathmaticlly is how these are created 1Light source 22
5PTM Fitter and Viewer PTM Fitter Creates a models of the variations in color at each pixelBiquadratic polynomials (6 coefficients)Minimum of 6 imagesPTM Viewer Reconstructs lighting angles based on fitted curves
6Our Project GoalCreate a basic white light PTM dome by the end of Winter quarterCreate a PTM device using multiple wavelengths of light Not exclusively white lightbring out different text in ancient documents that white light cannot see
7What We Have Accomplished - Proof of Concept Prototype and Miniature-Research and Understanding of PTM devices -includes contacts-Created work groups including software, camera, illumination/electrical, and structure.
8Software Group Accomplishments Identification and Investigation of LabVIEW softwareUnderstanding of use and benefits of B-SplinesIdentification of needed user inputs and outputs Have begun to program software and design user-interface
9Camera Group Accomplishments: Have identified the Camera for basic PTM dome based on research of possible camera specs Have learned about the Tone Transfer Function Have begun to learn about Modulation Transfer Function Chosen Camera:Nikon D50
10Illumination/Electrical Group Accomplishments: Have ordered and tested lights including LEDs, Solux, and incandescentHave learned how tocharacterize light by luminance, radiance, etc.
11Structure Group Accomplishments: Have orderd a dome for our basic white-light PTM based off of our system requirements Have created a CAD drawing of what our white-light PTM will look like They have got in contact with the machine shop TAB out to CAD drawing!!!
12What We Are Going To Do Create a multi-spectral PTM device Present our work at the Imagine RIT festival in MayHopefully have a few students travel to DC to compare the PTMs made by our devices to those imaging devices at the Library of CongressMaybe have students continue work on this project over the summer