منابع مشابه
A Review of Selected Multiple Light Source Detection Methods
1 Hougen and Ahuja This 1993 paper [2] is the first method to approach the multiple light source problem. It uses a combination of stereo, light source estimation, and shape from shading methods for determining the shape of objects. This summary will focus on the proposed light source estimation technique and it’s integration in the system. Four main assumptions are stated: 1. The light sources...
متن کاملLight Source Detection in Photographs
Common tasks related to image processing or augmented reality include rendering new objects into existing images, or matching objects with unknown illumination. To facilitate such algorithms, it is often necessary to infer from which directions a scene was illuminated, even if only a photograph is available. For this purpose, we present a novel light source detection algorithm that, contrary to...
متن کاملCompositing images through light source detection
Compositing an image of an object into another image is a frequently occurring task in both image processing and augmented reality. To ensure a seamless composition, it is often necessary to infer the light conditions of the image to adjust the illumination of the inserted object. Here, we present a novel algorithm for multiple light detection that leverages the limitations of the human visual ...
متن کاملA Survey of Light Source Detection Methods
This paper provides an overview of the most prominent techniques for light source detection. The main goal of light source detection is to recover the location and intensity of light sources given a single image of a scene. The light source need not be visible in the image for most of the methods discussed in this paper. Twelve methods are examined starting with Ullman’s approach from 1975. Sin...
متن کاملFace Detection at the Low Light Environments
Today, with the advancement of technology, the use of tools for extracting information from video are much wider in terms of both visual power and the processing power. High-speed car, perfect detection accuracy, business diversity in the fields of medical, home appliances, smart cars, humanoid robots, military systems and the commercialization makes these systems cost effective. Among the most...
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ژورنال
عنوان ژورنال: IEEE Transactions on Pattern Analysis and Machine Intelligence
سال: 2004
ISSN: 0162-8828
DOI: 10.1109/tpami.2004.1265865