Unlock instant, AI-driven research and patent intelligence for your innovation.

Satellite-borne three-non-colinear TDI CCD (Time Delayed and Integration Charge Coupled Device) image splicing method based on segmented affine transformation

A piecewise affine, non-collinear technology, applied in the field of surveying and mapping science, can solve problems such as time jumps that cannot be considered in line integration

Active Publication Date: 2011-11-02
常熟紫金知识产权服务有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional translation stitching method cannot take into account the possible line integration time jump in the scene, and the stitching process can only be performed sequentially between two adjacent TDI CCD imaging data

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Satellite-borne three-non-colinear TDI CCD (Time Delayed and Integration Charge Coupled Device) image splicing method based on segmented affine transformation
  • Satellite-borne three-non-colinear TDI CCD (Time Delayed and Integration Charge Coupled Device) image splicing method based on segmented affine transformation
  • Satellite-borne three-non-colinear TDI CCD (Time Delayed and Integration Charge Coupled Device) image splicing method based on segmented affine transformation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0050] Such as figure 1 As shown, three TDI CCDs are arranged in the focal plane of the camera according to the zigzag bias field ( figure 1 (a)), three TDI CCDs share a set of orbital attitude parameters ( figure 1 (b)), M is the original image after the three TDI CCD imaging data are aligned by time (line count) ( figure 1 (c)). For example, p1 and p2 are a pair of points with the same name between the TDI CCD1 image and the TDI CCD2 image, and point P is its corresponding object point. To sum up, the implementation process of the space-borne three non-collinear TDI CCD image stitching method based on segmented affine transformation can be divided into four stages:

[0051] The first stage: determine the number of rows and columns of the virtual mosaic scene

[0052] Let S 1 , S 2 and S 3 , the number of scanning lines of the original image acquired...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to a satellite-borne three-non-colinear TDICCD image splicing method based on segmented affine transformation. The spliced virtual scanning scene is regarded as a scene acquired by three virtual CCD linear arrays connected end to end on a focal plane, wherein virtual CCD linear arrays at both sides are consistent with the true TDICCD, the virtual CCD linear array in the middle fills in a gap between the virtual CCD linear arrays at both sides, the image face transformation models of TDICCD imaging data and virtual CCD imaging data are established through following the principle of references at both side and transformation in the middle according to the joints among slices, a virtual scanning scene is outputted through image resampling, and therefore, the invention effectively improves the splicing efficiency, precision and reliability of internal view fields.

Description

technical field [0001] The invention belongs to the field of surveying and mapping science and technology, and relates to a method for mosaicing images of three non-collinear TDICCDs carried by space based on segmented affine transformation. Background technique [0002] For spaceborne high-resolution optical cameras, in order to solve the problem of insufficient spectral energy of the image plane of the optical system caused by factors such as relative aperture reduction and imaging exposure time shortening, a time-delayed integration charge-coupled device (TDI CCD) is used. As an imaging sensor is currently a major technical approach. TDI CCD is a new type of photoelectric imaging device that uses the principle of time-delayed integration of charge to image. Compared with ordinary single-integration linear array CCD, it can expose ground objects multiple times in the form of multiple time-delayed integration imaging, which doubles the energy collection efficiency of the sy...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01C11/04
Inventor 胡芬王密金淑英
Owner 常熟紫金知识产权服务有限公司