Distortion Estimation Through Explicit Modeling of the Refractive Surface
| Autor: | Csanád Sándor, Szabolcs Pável, Lehel Csató |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Artificial neural network
business.industry Computer science ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Process (computing) 02 engineering and technology 01 natural sciences Refraction Ray Computer Science::Computer Vision and Pattern Recognition Distortion 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Pinhole camera model 020201 artificial intelligence & image processing Computer vision Artificial intelligence 010306 general physics business ComputingMethodologies_COMPUTERGRAPHICS |
| Zdroj: | Lecture Notes in Computer Science ISBN: 9783030305079 |
| DOI: | 10.1007/978-3-030-30508-6_2 |
| Popis: | Precise calibration is a must for high reliance 3D computer vision algorithms. A challenging case is when the camera is behind a protective glass or transparent object: due to refraction, the image is heavily distorted; the pinhole camera model alone can not be used and a distortion correction step is required. By directly modeling the geometry of the refractive media, we build the image generation process by tracing individual light rays from the camera to a target. Comparing the generated images to their distorted - observed - counterparts, we estimate the geometry parameters of the refractive surface via model inversion by employing an RBF neural network. We present an image collection methodology that produces data suited for finding the distortion parameters and test our algorithm on synthetic and real-world data. We analyze the results of the algorithm. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|