A METHOD OF CHARACTERIZING A LIGHT SOURCE AND A MOBILE DEVICE
First Claim
1. A method of characterizing a light source, the light source comprising a light emitter for emitting light, the method comprises the stages ofobtaining a first image of the light source in operation by means of a first camera, the first image is obtained from a first position (P1) in a first direction,obtaining first camera settings, wherein the first camera settings represent parameters of an image processing system and of an optical system of the first camera used at the moment in time when the first image was obtained,obtaining a second image of an illuminated environment being illuminated by the light source by means of a second camera, the second image is obtained from a second position (P2) in a second direction different from the first direction,obtaining second camera settings, wherein the second camera settings represent parameters of an image processing system and of an optical system of the second camera used at the moment in time when the second image was obtained,analyzing the first image and analyzing the first camera settings to estimate first parameters of the light source, wherein the first parameters of the light source relate to characteristics of light emitted by the light emitter,wherein, in the stage of analyzing the first image and analyzing the first camera settings, the second image and the second camera settings are also analyzed to estimate second parameters of the light source and to more accurately estimate the first parameters of the light source, wherein the second parameters of the light source relate to characteristics of a light beam emitted by the light source, the second parameters comprise information relating to a shape of the light beam.
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Accused Products
Abstract
A method of and a device for characterizing a light source and a method of selecting a replacement light source are provided. The method obtains (102) a first image of a light source in operation, obtains (106) a second image of the illuminated environment, and obtains (104, 108) first camera settings and second camera settings of the optical system and image processing system of the respective first and second camera at the respective moments in time that the first image and the second image was obtained. The first image, the second image, and the first and second camera settings are analyzed (110) to estimate characteristics of the light source. The characteristics of the light source may be used to propose a replacement light source and characteristics of the proposed replacement light source may be used to simulate the effect of the replacement light source on the illuminated environment.
27 Citations
15 Claims
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1. A method of characterizing a light source, the light source comprising a light emitter for emitting light, the method comprises the stages of
obtaining a first image of the light source in operation by means of a first camera, the first image is obtained from a first position (P1) in a first direction, obtaining first camera settings, wherein the first camera settings represent parameters of an image processing system and of an optical system of the first camera used at the moment in time when the first image was obtained, obtaining a second image of an illuminated environment being illuminated by the light source by means of a second camera, the second image is obtained from a second position (P2) in a second direction different from the first direction, obtaining second camera settings, wherein the second camera settings represent parameters of an image processing system and of an optical system of the second camera used at the moment in time when the second image was obtained, analyzing the first image and analyzing the first camera settings to estimate first parameters of the light source, wherein the first parameters of the light source relate to characteristics of light emitted by the light emitter, wherein, in the stage of analyzing the first image and analyzing the first camera settings, the second image and the second camera settings are also analyzed to estimate second parameters of the light source and to more accurately estimate the first parameters of the light source, wherein the second parameters of the light source relate to characteristics of a light beam emitted by the light source, the second parameters comprise information relating to a shape of the light beam.
Specification