METHOD AND APPARATUS FOR ESTIMATING REFLECTANCE PARAMETERS AND A POSITION OF A LIGHT SOURCE IN A SCENE

    公开(公告)号:EP3144893B1

    公开(公告)日:2018-06-06

    申请号:EP16187378.1

    申请日:2016-09-06

    Abstract: A method and apparatus for estimating reflectance parameters and a position of the light source(s) of specular reflections of a scene include RGB sequence analysis with measured geometry in order to estimate specular reflectance parameters of an observed 3D scene. Embodiments include pixel-based image registration from which profiles of 3D scene points image intensities over the sequence are estimated. Profiles are attached to a 3D point and to the set of pixels that display its intensity in the registered sequence. Subsequently, distinction is made between variable profiles that reveal specular effects and constant profiles that show diffuse reflections only. Then, for each variable profile diffuse reflectance is estimated and subtracted from the intensity profile to deduce the specular profile and the specular parameters are estimated for each observed 3D point. Then, the location of at least one light source responsible for the specular effects is estimated. Optionally, the parameters can be iteratively refined to determine color information and specular reflectance parameters.

    LIGHT RECEIVING DEVICE
    3.
    发明公开
    LIGHT RECEIVING DEVICE 审中-公开
    LIGHT摇篮

    公开(公告)号:EP2806456A4

    公开(公告)日:2015-03-18

    申请号:EP13768201

    申请日:2013-03-28

    Abstract: The present invention aims to provide a light receiving device which can calculate difference values of outputs from light receiving parts at the same time with a high S/N ratio while suppressing the number of output terminals without using switching elements. The light receiving device of the present invention includes a circuit pattern including first and second light receiving parts and first and second output terminals, which are formed on the same substrate, each of the first and second light receiving parts having a semiconductor layered part forming a photodiode structure having a first conductivity type semiconductor layer and a second conductivity type semiconductor layer, and a first electrode and a second electrode respectively connected to the first conductivity type semiconductor layer and the second conductivity type semiconductor layer, wherein the first electrodes of the first and second light receiving parts are connected to each other, the second electrode of the first light receiving part is connected to the first output terminal, the second electrode of the second light receiving part is connected to the second output terminal, and a difference between signals generated in the first light receiving part and the second light receiving part is output between the first and second output terminals.

    OBJECT DETECTION DEVICE
    4.
    发明公开
    OBJECT DETECTION DEVICE 审中-公开
    OBJEKTERKENNUNGSVORRICHTUNG

    公开(公告)号:EP2672294A1

    公开(公告)日:2013-12-11

    申请号:EP12757894.6

    申请日:2012-03-14

    Abstract: An object detection device includes an acquisition unit configured to acquire information indicating a temperature distribution, a storage unit configured to store background information indicating a temperature distribution when no target object exists, a detection unit configured to detect existence or absence of a target object, and an update unit configured to repeatedly update the background information. The update unit performs, with respect to a non-detection region, a first background updating process for the update of the background information based on the acquired information and performs, with respect to a detection region, a second background updating process for the update of the background information using a correction value.

    Abstract translation: 对象检测装置包括获取单元,其被配置为获取指示温度分布的信息;存储单元,被配置为存储指示不存在目标对象时的温度分布的背景信息;检测单元,被配置为检测目标对象的存在与否;以及 配置为重复更新背景信息的更新单元。 更新单元基于获取的信息,针对非检测区域执行用于更新背景信息的第一后台更新处理,并且针对检测区域执行用于更新的第二后台更新处理 使用校正值的背景信息。

    Strahlungssensor zum Erfassen der Position und Intensität einer Strahlungsquelle
    5.
    发明公开
    Strahlungssensor zum Erfassen der Position und Intensität einer Strahlungsquelle 审中-公开
    Strahlungssensor zum Erfassen der Position undIntensitäteiner Strahlungsquelle

    公开(公告)号:EP2629112A1

    公开(公告)日:2013-08-21

    申请号:EP13168326.0

    申请日:2008-12-17

    Applicant: EPCOS AG

    Inventor: Bohl, Benjamin

    CPC classification number: G01S3/781 G01S3/783

    Abstract: Es wird ein Strahlungssensor (1) zum Erfassen der Position und Intensität einer Strahlungsquelle beschrieben. Der Strahlungssensor (1) weist wenigstens einen Fotodetektor (2) mit einer strahlungsempfindliche Oberfläche auf. Des weiteren weist der Strahlungssensor (1) einen Reflektor (3) auf, der die von einer Strahlungsquelle emittierte Strahlung aus bestimmten Richtungen zumindest teilweise in Richtung der strahlungsempfindlichen Oberfläche des Fotodetektors (2) reflektiert. Der Reflektor (3) ist auf der von der Strahlungsquelle abgewandten Seite des Strahlungssensors (1) angeordnet.

    Abstract translation: 辐射传感器(1)具有具有辐射敏感表面的光电检测器(2)。 反射器(3)将来自指定方向的辐射部分地反射到光电检测器的辐射敏感表面的方向上。 辐射从辐射源发射。 反射器设置在由光入射侧转动的辐射传感器的一侧。 辐射传感器中设有保护罩。 包括具有均匀表面的光传感器的独立权利要求。

    AN OPTICAL DETECTOR
    7.
    发明公开
    AN OPTICAL DETECTOR 审中-公开
    光电检测

    公开(公告)号:EP2534500A1

    公开(公告)日:2012-12-19

    申请号:EP11702863.9

    申请日:2011-02-03

    CPC classification number: G01S3/786 G01S3/783 G01S7/489

    Abstract: A method of detecting the direction of incidence of an incoming modulated continuous wave light signal in a field of view of a detector comprising introducing a phase shift into the modulated light signal received by at least one portion of the field of view relative to the modulated light signal received by at least one other portion of the field of view and utilising the phase shift in determining the direction of incidence.

    MULTIUSE OPTICAL SENSOR
    8.
    发明公开
    MULTIUSE OPTICAL SENSOR 审中-公开
    可重复使用的光学传感器

    公开(公告)号:EP2434945A1

    公开(公告)日:2012-04-04

    申请号:EP10781029.3

    申请日:2010-05-20

    Abstract: One or more electromagnetic radiation sources, such as a light emitting diode, may emit electromagnetic waves into a volume of space. When an object enters the volume of space, the electromagnetic waves may reflect off the object and strike one or more position sensitive detectors after passing through an imaging optical system such as glass, plastic lens, or a pinhole located at known distances from the sources. Mixed signal electronics may process detected signals at the position sensitive detectors to calculate position information as well as total reflected light intensity, which may be used in medical and other applications. A transparent barrier may separate the sources and detectors from the objects entering the volume of space and reflecting emitted waves. Methods and devices are provided.

    DETECTION OF AN ELECTROMAGNETIC SIGNAL
    10.
    发明授权
    DETECTION OF AN ELECTROMAGNETIC SIGNAL 有权
    检测电磁信号

    公开(公告)号:EP1680687B1

    公开(公告)日:2008-12-10

    申请号:EP04798349.9

    申请日:2004-11-01

    CPC classification number: G01S7/4818 G01S3/783 G01S7/4804

    Abstract: A signal detector system (10) comprises a single signal detector (11) having a limited on-time during which any received electromagnetic signal can be assessed. The signal detector (11) receives electromagnetic signals from a single direction in space (D) through a single optical fibre (12), a signal splitter (13) which splits the collected signal between three optical paths (20, 30 and 40), and a signal combiner (14) which combines the portions of the signal transmitted by the three optical paths (20, 30 and 40) and transmits the combined signal to a signal detector input (15). Each of the optical paths (20, 30 and 40) includes a respective optical delay (21, 31 and 41) designed to delay transmission of any received signal towards the signal detector (11). In this manner the signal detector (11) will receive any signals that arrived at the optical fibre (12) during three separate periods of time.

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