公开(公告)号：US11874403B2

公开(公告)日：2024-01-16

申请号：US16414969

申请日：2019-05-17

Applicant: Infineon Technologies AG

Inventor： Hannes Plank

IPC: G01C3/08 ,  G01S7/4865 ,  G01S7/48 ,  G01S7/4863 ,  G01S17/10 ,  G01S17/89

CPC classification number: G01S7/4865 ,  G01S7/4802 ,  G01S7/4863 ,  G01S17/10 ,  G01S17/89

Abstract: Techniques for obtaining reflectance measurements using a time-of-flight (ToF) measurement device. An example method comprises obtaining a distance measurement, using one or more pixels in a ToF sensor, obtaining an intensity measurement corresponding to the distance measurement, using the one or more pixels, and calculating a reflectance value, based on the distance measurement, the intensity measurement, and a reflectance calibration factor. In some embodiments, the calibration distance is obtained by measuring a reference distance to a calibration surface, using a reference pixel in the ToF sensor, and obtaining the calibration distance from the measured reference distance. In some of these embodiments, the reflectance calibration factor is obtained by obtaining a reference intensity corresponding to the reference distance, using the reference pixel, and calculating the reflectance calibration factor for the one or more pixels as a function of the reference intensity and a viewing angle for the one or more pixels.

公开(公告)号：US20220283306A1

公开(公告)日：2022-09-08

申请号：US17825245

申请日：2022-05-26

Applicant: Infineon Technologies AG

Inventor： Hannes Plank ,  Norbert Druml ,  Theresa Egger ,  Thomas Herndl ,  Christoph Steffan

IPC: G01S17/48 ,  G01S17/88 ,  G01S17/42

Abstract: A localization apparatus includes: a time-of-flight circuit configured to emit a first modulated light signal and to receive reflections of the first modulated light signal from at least three devices; a processing circuit configured to determine, based on the first modulated light signal and the reflections, positions of the at least three devices in a first coordinate system associated with the apparatus; and a receive circuit configured to receive second modulated signals from the at least three devices, the second modulated signals including data indicating positions of the at least three devices in a second coordinate system. The processing circuit is further configured to determine a position and orientation of the apparatus in the second coordinate system based on the positions of the at least three devices in the first coordinate system and the data indicating the positions of the at least three devices in the second coordinate system.

公开(公告)号：US20220151045A1

公开(公告)日：2022-05-12

申请号：US17524360

申请日：2021-11-11

Applicant: Infineon Technologies AG

Inventor： Hannes Plank ,  Markus Dielacher ,  Martin Flatscher ,  Heinrich Guenther Heiss ,  Robert Lobnik ,  Armin Josef Schoenlieb

IPC: H05B47/115

Abstract: An electronic device includes a display device having light-emitting elements for displaying an optical image on a front side of the display device, and at least one illumination element configured to emit light for illuminating a scene in front of the front side of the display device. The display device is arranged between the at least one illumination element and the scene and includes a first display region exhibiting a first transmissivity for the light emitted by the at least one illumination element and a second display region exhibiting a second transmissivity for the light emitted by the at least one illumination element. The first transmissivity is higher than the second transmissivity. At least one optical element arranged between the at least one illumination element and the display device is configured to focus the light emitted by the at least one illumination element through the first display region.

公开(公告)号：US20220018965A1

公开(公告)日：2022-01-20

申请号：US17380092

申请日：2021-07-20

Applicant: Infineon Technologies AG

Inventor： Robert Lobnik ,  Hannes Plank ,  Armin Josef Schoenlieb

IPC: G01S17/89 ,  G02F1/163 ,  G01S7/481 ,  G01S7/497 ,  G01S7/48 ,  G01S7/4865 ,  G01S17/14

Abstract: A method for characterizing a time-of-flight sensor is provided. The time-of-flight sensor is covered by a cover exhibiting an adjustable transmittance. The method includes selectively adjusting the transmittance of the cover such that the cover is opaque for light emittable by the time-of-flight sensor. Further, the method includes performing at least one time-of-flight measurement with the time-of-flight sensor while the cover is opaque for obtaining measurement data for light reflected from the cover back to the time-of-flight sensor. The method additionally includes determining characterization data based on the measurement data. The characterization data indicate a quantity related to the time-of-flight sensor.

公开(公告)号：US20210286080A1

公开(公告)日：2021-09-16

申请号：US17198873

申请日：2021-03-11

Applicant: Infineon Technologies AG

Inventor： Hannes Plank ,  Armin Josef Schoenlieb

IPC: G01S17/89 ,  G01S7/48 ,  G01S7/484 ,  G01S17/42 ,  G01S7/4865

Abstract: A method for time-of-flight sensing is provided. The method includes for at least one pixel position performing at least one continuous wave measurement to obtain at least one first measurement value for the pixel position. Further, the method includes performing at least one coded modulation measurement to obtain at least one second measurement value for the pixel position. The method additionally includes determining an estimate of a distance value of the pixel position based on the at least one first measurement value and the at least one second measurement value using a mapping function.

公开(公告)号：US20210018627A1

公开(公告)日：2021-01-21

申请号：US16932117

申请日：2020-07-17

Applicant: Infineon Technologies AG

Inventor： Hannes Plank ,  Armin Schoenlieb

IPC: G01S17/50 ,  G06T7/246 ,  G06T7/579 ,  G06T7/521 ,  H04N5/225 ,  G01S17/894 ,  G01S7/497

Abstract: A method for determining relative motion between a time-of-flight camera and an object in a scene sensed by the time-of-flight camera is provided. The method includes receiving at least two sets of raw images of the scene from the time-of-flight camera, each set including at least one raw image. The raw images are based on correlations of a modulated reference signal and measurement signals of the time-of-flight camera. The measurement signals are based on a modulated light signal emitted by the object. The method includes determining, for each set of raw images, a value indicating a respective phase difference between the modulated light and reference signals based on the respective set of raw images, and determining information about relative motion between the time-of-flight camera and object based on the values indicating the phase differences. The method includes outputting the information about relative motion between the time-of-flight camera and the object.

公开(公告)号：US09906717B1

公开(公告)日：2018-02-27

申请号：US15254306

申请日：2016-09-01

Applicant: Infineon Technologies AG

Inventor： Hannes Plank ,  Norbert Druml

IPC: H04N5/232 ,  G06T7/00 ,  G06T3/40

CPC classification number: H04N5/23232 ,  G06T3/40 ,  G06T7/0085 ,  G06T7/50

Abstract: A method for generating a high-resolution depth image includes providing at least a first low-resolution raw image. Furthermore, the method includes providing at least one high-resolution raw image. A resolution of the high-resolution raw image is higher than a resolution of the first low-resolution raw image. Furthermore, the method includes generating a low-resolution depth image. Furthermore, the method includes generating the high-resolution depth image based on the low-resolution depth image and the high-resolution raw image.

公开(公告)号：US12243285B2

公开(公告)日：2025-03-04

申请号：US18053580

申请日：2022-11-08

Applicant: Infineon Technologies AG

Inventor： Armin Josef Schönlieb-Stalzer ,  Sebastian Handel ,  Hannes Plank

IPC: G06V10/60 ,  G02B5/30 ,  G06T7/13 ,  G06V10/141 ,  G06V10/74 ,  G06V10/764

Abstract: An apparatus for detecting a specular surface in a scene is provided. The apparatus includes an illumination device configured to emit polarized light towards the scene. The apparatus further includes an imaging system configured to capture a first image of the scene based on light emanating from the scene. The light emanating from the scene includes one or more reflection of the emitted polarized light. The imaging system is further configured to capture a second image of the scene based on filtered light. The apparatus further includes a polarization filter configured to generate the filtered light by filtering the light emanating from the scene. The apparatus further includes processing circuitry configured to determine presence of the specular surface in the scene based on a comparison of the first image and the second image.

公开(公告)号：US11879993B2

公开(公告)日：2024-01-23

申请号：US16705832

申请日：2019-12-06

Applicant: Infineon Technologies AG

Inventor： Josef Steinbaeck ,  Hannes Plank ,  Armin Schoenlieb

IPC: G01S7/48 ,  G01S17/08

CPC classification number: G01S7/4808 ,  G01S17/08

Abstract: Examples relate to a method, an apparatus and a computer program for determining distance information based on Time of Flight (ToF) sensor data. The method includes obtaining the ToF sensor data, determining one or more saturated regions within the ToF sensor data, determining distance information for one or more boundary regions located adjacent to the one or more saturated regions based on the ToF sensor data, and determining distance information for at least a part of the one or more saturated regions based on the distance information of the one or more boundary regions.

公开(公告)号：US11843878B2

公开(公告)日：2023-12-12

申请号：US17836603

申请日：2022-06-09

Applicant: Infineon Technologies AG

Inventor： Hannes Plank

IPC: H04N25/50 ,  H04N25/75 ,  H04N25/79 ,  G01S17/894

CPC classification number: H04N25/50 ,  G01S17/894 ,  H04N25/75 ,  H04N25/79

Abstract: A sensor device is provided. The sensor device includes an image sensor having a plurality of photo-sensitive pixels configured to measure light received from a scene. The image sensor is configured to output image data indicative of measurement values of at least part of the plurality of photo-sensitive pixels. Additionally, the sensor device includes processing circuitry configured to determine a histogram based on the image data. The histogram represents a distribution of the measurement values. The processing circuitry is further configured to determine whether an object is present in the scene based on the histogram. In addition, the sensor device includes interface circuitry configured to output presence data indicating whether the object is present in the scene.