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1. WO2022010456 - EVENT-BASED THERMAL CAMERA SYSTEM

Publication Number WO/2022/010456
Publication Date 13.01.2022
International Application No. PCT/US2020/040934
International Filing Date 06.07.2020
IPC
H04N 5/33 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
30Transforming light or analogous information into electric information
33Transforming infra-red radiation
B29C 64/386 2017.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
64Additive manufacturing, i.e. manufacturing of three-dimensional objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
30Auxiliary operations or equipment
386Data acquisition or data processing for additive manufacturing
B33Y 50/02 2015.1
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
50Data acquisition or data processing for additive manufacturing
02for controlling or regulating additive manufacturing processes
Applicants
  • HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. [US]/[US]
Inventors
  • RASTOGI, Manu
  • ATHREYA, Madhu Sudan
  • LEWIS, M Anthony
Agents
  • GARDINER, Austin
  • FLANAGAN, Justin K.
Priority Data
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) EVENT-BASED THERMAL CAMERA SYSTEM
(FR) SYSTÈME DE CAMÉRA THERMIQUE BASÉ SUR DES ÉVÉNEMENTS
Abstract
(EN) Systems and methods are described herein for moving a multi-pixel thermal imaging sensor relative to a three-dimensional (3D) printer to various poses during a continuous time period. Thermal radiation received by each pixel of the multi-pixel thermal imaging sensor may be converted to an electric current. An integrated event generation circuit may generate a time-encoded output signal for each pixel. A thermal image may be generated that includes salient thermal events based on a time-multiplexed spatial encoding of the received signals as the multi-pixel thermal imaging sensor is moved. Non-salient thermal events, such as noise events associated with moving the multi-pixel thermal imaging sensor, are distinguished from salient thermal events.
(FR) Des systèmes et des procédés sont décrits ici pour déplacer un capteur d'imagerie thermique à pixels multiples par rapport à une imprimante tridimensionnelle (3D) vers différentes poses pendant une durée continue. Le rayonnement thermique reçu par chaque pixel du capteur d'imagerie thermique à pixels multiples peut être converti en courant électrique. Un circuit intégré générateur d'événements peut générer un signal de sortie à codage temporel pour chaque pixel. Une image thermique peut être générée et comprendre des événements thermiques saillants basés sur un codage spatial à multiplexage temporel des signaux reçus lors du déplacement du capteur d'imagerie thermique à pixels multiples. Des événements thermiques non saillants, tels que des événements de bruit associés au déplacement du capteur d'imagerie thermique à pixels multiples, sont distingués des événements thermiques saillants.
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