A method for hybrid stitching of large-format cameras with internal and external fields of view

Abstract

A hybrid splicing method of a large-format camera's internal and external fields of view, relating to the technical field of aerial remote sensing photogrammetry; comprising the following steps: step 1, selecting four lenses to establish a lens group; and dividing the same grid at the focal plane position of each lens; Step 2. Place the focal plane components in parallel on the grids of the four lenses; each focal plane component is provided with a detector; the detectors of different focal plane components are placed in different positions according to the division grid; all the detectors are the same ; Step three, four focal plane components simultaneously expose and image the same object; the first focal plane component generates a first image; the second focal plane component generates a second image; the third focal plane component generates a third image; the fourth focal plane The component generates the fourth image; Step 4, create a blank grid matrix with 5 rows×4 columns, and embed the four images into the newly-built grid matrix to obtain the final full-frame image; the present invention has the advantages of large-format imaging Realization and space constraints of small structural volume.

Description

technical field [0001] The invention relates to the technical field of aerial remote sensing photogrammetry, in particular to a method for mixing and splicing internal and external fields of view of a large format camera. Background technique [0002] Aerial remote sensing has the advantages of strong autonomy, high precision, high efficiency, flexibility and convenience, and has become an effective means to quickly obtain high-precision remote sensing data. Remote sensing information has become an indispensable strategic and economic resource in the era of global earth observation, and is playing a major role in various fields of human social development. increasingly important. [0003] In the field of aerial remote sensing surveying and mapping, there is a greater demand for large-format cameras, but limited by the semiconductor process and technical level, the scale of camera detectors is limited. At present, the cost of large-scale chips such as 17k×14k and 30k×5k in ...

AI Technical Summary

Problems solved by technology

Invention patent CN 101692447B uses a single lens and rotating mirror to achieve splicing, which has the disadvantage that the long-term working stability of the motion mechanism is difficult to guarantee; Invention patents CN 102883095A and CN102905061A both use double lenses and beam splitting prisms to achieve splicing, and there is an energy loss for each image plane 50% deficiency, and there is a deficiency that adding prisms to the optical system increases the difficulty of optical system design

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