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1. WO2020005233 - PERSPECTIVE TRANSFORMATION OF IMAGES VIA TOUCH SIGNALS

Publication Number WO/2020/005233
Publication Date 02.01.2020
International Application No. PCT/US2018/039785
International Filing Date 27.06.2018
IPC
G PHYSICS
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
B
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
21
Projectors or projection-type viewers; Accessories therefor
14
Details
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
3
Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
01
Input arrangements or combined input and output arrangements for interaction between user and computer
048
Interaction techniques based on graphical user interfaces [GUIs]
0487
using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
0488
using a touch-screen or digitiser, e.g. input of commands through traced gestures
G03B 21/14 (2006.01)
G06F 3/0488 (2013.01)
CPC
G06F 3/0488
H04N 9/3185
Applicants
  • HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. [US/US]; 10300 Energy Drive Spring, Texas 77389, US
Inventors
  • LIN, Yu-Hsuan; TW
  • GARCIA-REYERO VINAS, Santiago; US
  • BERVER, Elissa Melor; US
Agents
  • WOODWORTH, Jeffrey C.; US
  • RAHMAN, Mohammad S.; US
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PERSPECTIVE TRANSFORMATION OF IMAGES VIA TOUCH SIGNALS
(FR) TRANSFORMATION DE PERSPECTIVE D'IMAGES PAR L'INTERMÉDIAIRE DE SIGNAUX TACTILES
Abstract
(EN)
An example calibration device includes a projector to project a first image onto a touch screen. The first image includes a first set of four corner coordinates. A processor is to perform a first perspective transformation of the first image into a second image for projection onto the touch screen by the projector. The second image includes a second set of four corner coordinates. The processor is to receive at least one touch signal associated with a second set of four corner coordinates associated with the second image from the touch screen. The processor is to perform a second perspective transformation of the second image using the second set of four corner coordinates to resize the second image based on the first set of four corner coordinates.
(FR)
Un exemple de dispositif d'étalonnage conforme à la présente invention comprend un projecteur servant à projeter une première image sur un écran tactile. La première image comprend un premier ensemble de quatre coordonnées de coin. Un processeur sert à effectuer une première transformation de perspective de la première image en une seconde image destinée à être projetée sur l'écran tactile par le projecteur. La seconde image comprend un second ensemble de quatre coordonnées de coin. Le processeur doit recevoir de l'écran tactile au moins un signal tactile associé à un second ensemble de quatre coordonnées de coin associées à la seconde image. Le processeur doit effectuer une seconde transformation de perspective de la seconde image à l'aide du second ensemble de quatre coordonnées de coin de façon à redimensionner la seconde image sur la base du premier ensemble de quatre coordonnées de coin.
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