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Method for adjusting image projected to curve surface and corresponding system

An image and projection technology, which is applied in the direction of image reproducer, image enhancement, and image analysis using projection devices, which can solve the problems of inflexible and cost-effective HUD systems.

Inactive Publication Date: 2010-10-06
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These limitations make currently available HUD systems inflexible and costly

Method used

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  • Method for adjusting image projected to curve surface and corresponding system
  • Method for adjusting image projected to curve surface and corresponding system
  • Method for adjusting image projected to curve surface and corresponding system

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Embodiment Construction

[0021] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be understood by those skilled in the art that the present invention may be practiced without some of these specific details. In other instances, well known process operations and implementation details have not been described in detail so as not to unnecessarily obscure the present invention.

[0022] In order to produce dewarped images on curved surfaces, a one-time calibration process is performed according to the embodiments described below. This calibration process is performed for each projection, surface and observer viewing situation. That is, if the projector or image generating device is changed or moved, or if the surface is changed or moved, or if the viewer's point of view is moved, a new calibration process is required. In one embodiment, data from multiple calibration processes may be saved. In th...

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Abstract

A method for adjusting an image projected onto a warped surface is provided. The method initiates with capturing calibration points within a calibration image projected onto the warped surface. The method includes analyzing the calibration points to determine relative locations among the calibration points. In one embodiment, the method utilizes a pseudo origin for locating beginning points for successive rows of calibration points. The calibration points are ordered according to the relative locations. The ordered calibration points may be applied to alter the image data prior to projection of the image data onto the warped surface. A system for calibrating points so that an image projected onto a warped surface does not appear as distorted is also provided. The invention is calibration technique for heads up display system.

Description

Background technique [0001] To enhance the safety features of the car, buyers of certain car models are offered a heads up display (HUD) as an option. A virtual image is projected from the dashboard onto the windshield. Since the windshield is not flat and not perpendicular to the driver's eyes, the image must be corrected to ensure it is undistorted and easy to see. In some solutions, specialized wedge-shaped interlayers are used to alter the geometry of the glass and provide the optical correction required for image reflections. In other solutions, an optical lens is manually adjusted by a technician during the manufacture of the car in order to alter the projected image so that the perceived image is not distorted. [0002] However, all current solutions lack the ability to adjust for any changes in the projector, viewer point of view, or for changes in the windshield. Therefore, when something changes after the original settings have been made, the vehicle owner must ta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N17/00G06T7/00G02B27/00B60R11/00
CPCG06T5/006G06T5/80H04N9/31
Inventor D·麦法迪恩T·P·卡丹特塞瓦
Owner SEIKO EPSON CORP
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