Detecting Indentations on Documents Pressed by Pen Tip Force Using a Near Infrared Light Emitting Diode (NIR LED) and Shape from Shading.
Takeshi FurukawaPublished in: ICWF (2010)
Keyphrases
- light emitting
- shape from shading
- visible light
- light emitting diodes
- light source
- light intensity
- multispectral
- photometric stereo
- shape recovery
- surface normals
- perspective projection
- single image
- intensity images
- surface orientation
- shape reconstruction
- shape estimation
- provably convergent
- spatially varying
- shape from texture
- face recognition
- robust statistics
- contact force
- image processing
- vector space
- image data
- image analysis
- lighting direction