Multichannel geometric correction and edge blending method based on NURBS curved surfaces

An edge fusion, multi-channel technology, used in image communication, color TV components, TV system components, etc., to reduce costs, improve accuracy, and reduce system delays

Inactive Publication Date: 2015-01-14
HARBIN DIANSHI SIMULATION SCI & TECH
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AI Technical Summary

Problems solved by technology

[0009] The development of modern GPU technology has provided a hardware basis for geometric correction and edge fusion through software on the basis of ensuring real-time performance. The flexibility of NURBS surfaces provides great convenience for geometric correction. When the number of NURBS surfaces , its continuity can effectiv

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  • Multichannel geometric correction and edge blending method based on NURBS curved surfaces
  • Multichannel geometric correction and edge blending method based on NURBS curved surfaces
  • Multichannel geometric correction and edge blending method based on NURBS curved surfaces

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Embodiment Construction

[0035] This implementation mode introduces the present invention in detail with reference to FIGS. 1-4 .

[0036] The specific embodiment of the present invention includes two stages of processing to realize the geometric correction and edge fusion functions of multi-channel projection. The first stage is the adjustment stage. This stage does not require real-time performance. In this stage, the geometric correction surface is established, and The geometric correction function is realized by adjusting the control points and weight factors of the geometric surface. After the geometric correction of all projection channels is completed, the edge fusion area calibration of each adjacent channel is completed in the same way as the geometric correction, and then through Adjust the brightness of the fusion area to complete the edge fusion function. Finally, eliminate the image displayed outside the expected projection area, and save the result to the next stage for use; the second st...

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Abstract

The invention discloses a multichannel projection geometric correction and edge blending efficient method based on NURBS curved surfaces. The method is mainly characterized by comprising the steps of geometric correction of the projection of a multichannel curved surface curtain, edge blending among projection display channels and elimination of unnecessary images exceeding edges of a display area. The novelty of the method lies in that continuity of the curved surface curtain and good fitting performance of the NURBS curved surfaces are fully considered, the advantage that the NURBS curved surfaces can be controlled easily is utilized, edge blending among the projection display channels is achieved through algorithms like correction on edge images (img file='dest_path_image002. TIF' wi='57' he='20' /) of adjacent channels, and therefore continuous display of images of multiple projection channels is achieved. The method is especially suitable for display of continuous scenes on curved surface curtains like spherical curtains and columnar curtains through a plurality of projectors, and has the advantages of being good in real-time performance, small in geometric distortion and good in platform compatibility.

Description

technical field [0001] The present invention belongs to the field of computer graphics. With the increasing demand for high-resolution display and immersive display, it provides a larger development space for multi-channel projection display. The immersion effect has received more and more attention, which provides an important opportunity for the development of geometric correction and edge fusion technology. The development of modern GPU technology makes it possible to realize geometric correction and edge fusion through software on the basis of ensuring real-time Based on the hardware foundation, the invention relates to a NURBS-based geometric correction and edge fusion method. Background technique [0002] The application of multi-channel projection display technology has a long history, especially in recent years, with the increasing demand for high-resolution and immersive display in fields such as simulation and entertainment, the development of computer graphics har...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T5/00H04N5/74
CPCG06T5/006G06T2207/20192H04N5/74
Inventor 张泽旭王纲郑博
Owner HARBIN DIANSHI SIMULATION SCI & TECH
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