Orthographic image processing and splicing method and device, equipment and storage medium

Abstract

The embodiment of the invention discloses an ortho-image processing and splicing method and device, electronic equipment and a storage medium. The embodiment of the invention provides a technical scheme. The method comprises the following steps: performing gross error removal processing on an overlapping region determined as an associated image to reduce a measurement error, performing adjustmentprocessing to obtain a control point plane coordinate to generate a DTM file, converting the DTM file into an orthoimage, and finally splicing the orthoimages to obtain an orthoimage corresponding tothe whole shooting region. Through gross error removal processing and adjustment processing, measurement errors of control points are reduced, errors generated by plane coordinates are reduced, and then the splicing effect of the orthoimages is optimized; meanwhile, the point with the smallest brightness change of the pixel points of the two orthoimages at the same point position is selected as the joint point, so that the splicing effect of the two orthoimages is better, the tone difference generated when the two orthoimages are spliced can be eliminated by conducting tone adjustment processing on the joint area, and the tone of the images is unified.

Description

technical field

[0001] The embodiments of the present application relate to the technical field of orthophoto image processing, and in particular, to a method, device, device, and storage medium for processing and stitching orthophoto images. Background technique

[0002] At present, in the application of photogrammetry, single-slice ortho-rectification is used to process ortho-images, and then multiple single-slice ortho-images are mosaiced (stitched) into an ortho-image of the entire area. Among them, when stitching single orthophotos, it is necessary to accurately find a suitable stitching line to avoid problems such as image seam offset, geological boundary extension, and image misalignment, which will affect the stitching effect of orthophotos. For this reason, the existing method for selecting the splicing line, by determining the center point near the center line of the overlapping area of ​​the two images, adopts the greedy algorithm to select the local path point, a...

Examples

Embodiment 2

[0122] On the basis of the above examples, Figure 9 It is a schematic structural diagram of an orthoimage processing and stitching device provided in Embodiment 2 of the present application. refer to Figure 9 The device for processing and stitching orthophoto images provided in this embodiment specifically includes: an association module 21 , a gross error removal module 22 , an adjustment module 23 and a stitching module 24 .

[0123] Wherein, the association module 21 is used to receive several image data, perform overlap analysis according to the overlap area between the images, and establish associated images based on the overlap analysis results;

[0124] The gross error removal module 22 is used to perform gross error analysis on the image data in the corresponding overlapping area of ​​the associated image, and perform gross error removal processing according to the gross error analysis result;

[0125] The adjustment module 23 is used to perform an adjustment proce...

Embodiment 3

[0131] Embodiment 3 of the present application provides an electronic device, and the electronic device includes: a processor, a memory, and a communication module. The number of processors in the electronic device may be one or more, and the number of memories in the electronic device may be one or more. The processor, memory, and communication module of the electronic device may be connected through a bus or in other ways.

[0132] As a computer-readable storage medium, the memory can be used to store software programs, computer-executable programs and modules, such as program instructions / modules corresponding to the method for processing and stitching orthophoto images described in any embodiment of the present application (for example, orthophoto An association module, a gross error removal module, an adjustment module and a stitching module in the image processing and stitching device). The memory may mainly include a program storage area and a data storage area, wherei...

Embodiment 4

[0137] The embodiment of the present application also provides a storage medium containing computer-executable instructions. When executed by a computer processor, the computer-executable instructions are used to execute a method for processing and stitching orthophotos. The processing and stitching of orthophotos The method includes: receiving several image data, performing overlap analysis according to the overlapping area between the images, and establishing an associated image based on the overlapping analysis result; performing gross error analysis on the image data in the corresponding overlapping area of ​​the associated image, and according to the gross error The analysis results are subjected to coarse error processing; based on the preset control points between the associated images, the image data is adjusted to generate a corresponding DTM file; the DTM file is converted into an orthophoto, and in the overlapping area The splicing of the orthophotos is completed wit...

technical field

[0001] The embodiments of the present application relate to the technical field of orthophoto image processing, and in particular, to a method, device, device, and storage medium for processing and stitching orthophoto images. Background technique

[0002] At present, in the application of photogrammetry, single-slice ortho-rectification is used to process ortho-images, and then multiple single-slice ortho-images are mosaiced (stitched) into an ortho-image of the entire area. Among them, when stitching single orthophotos, it is necessary to accurately find a suitable stitching line to avoid problems such as image seam offset, geological boundary extension, and image misalignment, which will affect the stitching effect of orthophotos. For this reason, the existing method for selecting the splicing line, by determining the center point near the center line of the overlapping area of ​​the two images, adopts the greedy algorithm to select the local path point, a...

Examples

Embodiment 2

[0122] On the basis of the above examples, Figure 9 It is a schematic structural diagram of an orthoimage processing and stitching device provided in Embodiment 2 of the present application. refer to Figure 9 The device for processing and stitching orthophoto images provided in this embodiment specifically includes: an association module 21 , a gross error removal module 22 , an adjustment module 23 and a stitching module 24 .

[0123] Wherein, the association module 21 is used to receive several image data, perform overlap analysis according to the overlap area between the images, and establish associated images based on the overlap analysis results;

[0124] The gross error removal module 22 is used to perform gross error analysis on the image data in the corresponding overlapping area of ​​the associated image, and perform gross error removal processing according to the gross error analysis result;

[0125] The adjustment module 23 is used to perform an adjustment proce...

Embodiment 3

[0131] Embodiment 3 of the present application provides an electronic device, and the electronic device includes: a processor, a memory, and a communication module. The number of processors in the electronic device may be one or more, and the number of memories in the electronic device may be one or more. The processor, memory, and communication module of the electronic device may be connected through a bus or in other ways.

[0132] As a computer-readable storage medium, the memory can be used to store software programs, computer-executable programs and modules, such as program instructions / modules corresponding to the method for processing and stitching orthophoto images described in any embodiment of the present application (for example, orthophoto An association module, a gross error removal module, an adjustment module and a stitching module in the image processing and stitching device). The memory may mainly include a program storage area and a data storage area, wherei...

Embodiment 4

[0137] The embodiment of the present application also provides a storage medium containing computer-executable instructions. When executed by a computer processor, the computer-executable instructions are used to execute a method for processing and stitching orthophotos. The processing and stitching of orthophotos The method includes: receiving several image data, performing overlap analysis according to the overlapping area between the images, and establishing an associated image based on the overlapping analysis result; performing gross error analysis on the image data in the corresponding overlapping area of ​​the associated image, and according to the gross error The analysis results are subjected to coarse error processing; based on the preset control points between the associated images, the image data is adjusted to generate a corresponding DTM file; the DTM file is converted into an orthophoto, and in the overlapping area The splicing of the orthophotos is completed wit...

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