WO2021048525A1 - Procédé de génération et de modification d'images en perspective non linéaire - Google Patents
Procédé de génération et de modification d'images en perspective non linéaire Download PDFInfo
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- WO2021048525A1 WO2021048525A1 PCT/GB2020/052100 GB2020052100W WO2021048525A1 WO 2021048525 A1 WO2021048525 A1 WO 2021048525A1 GB 2020052100 W GB2020052100 W GB 2020052100W WO 2021048525 A1 WO2021048525 A1 WO 2021048525A1
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- image
- scene
- viewport
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T15/00—3D [Three Dimensional] image rendering
- G06T15/06—Ray-tracing
Definitions
- the occlusion of objects in a 3D scene when viewed in a 2D image generated by linear perspective or related projective geometries is determined by the convergence of linear light rays through the pinhole of the camera that captured the image, meaning that it is not possible to display areas of a scene, or portions of objects in the scene, which are occluded by interposed objects. Consequently, designers are limited in the extent to which they can modify a 2D image, or moving image, since they cannot independently modify layers of depth in the depicted scene without costly image processing.
- a further limitation of many optical and computer graphics systems is that the geometry of the images they display is not automatically modified in response to the physical actions of the viewer in the real world.
- the image control functions can be applied individually or in combination to increase or decrease the vertical field of view of the scene represented by the image, ranging from any angle that is greater than to any angle that is less than 360 ⁇ ,
- the image control functions can be applied individually or in combination to increase or decrease the amount of straightness or curvature in the image as a function of depth, from 0 where the straightness of objects or regions in the image increases with depth, to 100 where the curvature of objects or regions in the image increases with depth.
- Figure 8 is a schematic diagram showing how the probe ray and trace ray combine to produce an image result in the format of an equirectangular image
- FIG 10 there is shown a a schematic diagram of how the resultant loosely equirectangular image is converted into another 2D Cartesian grid and Figure 11 shows the 2D image according to parameters set by the user or designer of the device embodying the present method.
- the information returned from the probe ray can again be applied at this level to perform novel geometry or depth adaptive image effects.
- Figure 12 of the drawings there is shown a User Control Interface 1000 for use with an embodiment of the present method, in which a series of control sliders are pre programmed to modify the functions disclosed in the present method and so applied to the 3D data in order to transform its appearance in the Image Display Device 117, the parameters of which can be modified freely via the User Control Interface.
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- Computer Graphics (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Processing Or Creating Images (AREA)
Abstract
L'invention concerne un procédé de génération et de modification d'une image 2D en perspective non linéaire d'une scène 3D, le procédé comprenant les étapes suivantes : traiter une image d'une scène 3D pour générer un premier ensemble de points de données représentant la scène 3D et les objets 3D dans la scène ; définir un point d'observation (PoO) à l'intérieur de la scène 3D, comprenant un point de visualisation (VP) et la direction de visualisation (VD) ; définir une fenêtre d'affichage 2D comprenant un réseau de pixels ; convertir la fenêtre d'affichage 2D en une fenêtre d'affichage hémisphérique, chaque pixel comprenant un emplacement défini dans des coordonnées hémisphériques, le centre de l'hémisphère étant situé au point de visualisation, et le pôle de l'hémisphère étant aligné avec la direction de visualisation (VD) ; pour chaque pixel de la fenêtre d'affichage hémisphérique, lancer un rayon de sonde à partir du point d'observation (PoO) par l'intermédiaire du pixel dans la scène 3D pour détecter une intersection ; pour chaque intersection, convertir le point de données 3D de l'intersection en un second ensemble de points de données, chaque point de données étant relatif au point d'observation (PoO) ; modifier le point d'observation (PoO) selon le second ensemble et une ou plusieurs fonctions de commande d'image ; pour chaque pixel de la fenêtre d'affichage hémisphérique, lancer un rayon de trace à partir d'un point d'observation modifié (MPoO) ; la réflexion et la détection du rayon de trace pour un nombre variable de réflexions/intersections ; déterminer une couleur finale pour chaque pixel de la fenêtre d'affichage à partir du rayon de trace dans une fenêtre d'affichage modifiée ; rendre la fenêtre d'affichage modifiée représentant une image 2D modifiée de la scène 3D en une image 2D sur un écran.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1913191.1 | 2019-09-12 | ||
| GB1913191.1A GB2587010B (en) | 2019-09-12 | 2019-09-12 | A method for generating and modifying non-linear perspective images of a 3D scene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2021048525A1 true WO2021048525A1 (fr) | 2021-03-18 |
Family
ID=68315326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/GB2020/052100 WO2021048525A1 (fr) | 2019-09-12 | 2020-09-02 | Procédé de génération et de modification d'images en perspective non linéaire |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2587010B (fr) |
| WO (1) | WO2021048525A1 (fr) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013010261A2 (fr) * | 2011-07-18 | 2013-01-24 | Dog Microsystems Inc. | Procédé et système pour effectuer un rendu |
-
2019
- 2019-09-12 GB GB1913191.1A patent/GB2587010B/en active Active
-
2020
- 2020-09-02 WO PCT/GB2020/052100 patent/WO2021048525A1/fr active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013010261A2 (fr) * | 2011-07-18 | 2013-01-24 | Dog Microsystems Inc. | Procédé et système pour effectuer un rendu |
Non-Patent Citations (2)
| Title |
|---|
| ANONYMOUS: "Ray tracing (graphics) - Wikipedia", 10 September 2016 (2016-09-10), XP055360675, Retrieved from the Internet <URL:https://en.wikipedia.org/w/index.php?title=Ray_tracing_(graphics)&oldid=738679597> [retrieved on 20170331] * |
| DANIEL OTT ET AL: "Simulating a virtual fisheye lens for the production of full-dome animations", 20070323; 1077952576 - 1077952576, 23 March 2007 (2007-03-23), pages 294 - 299, XP058263125, ISBN: 978-1-59593-629-5, DOI: 10.1145/1233341.1233394 * |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201913191D0 (en) | 2019-10-30 |
| GB2587010B (en) | 2023-10-18 |
| GB2587010A (en) | 2021-03-17 |
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