Out-of-focus compensation device of space camera and applicable out-of-focus compensation method of out-of-focus compensation device

A technology of a space camera and a compensation method, applied in the field of defocus compensation device and defocus compensation, can solve the problems of multiple adjustment of the focal plane of the camera and the difficulty in determining the position of the optimal focal plane, so as to avoid calculation errors and improve adaptability and application range, the effect of effective adjustment

Inactive Publication Date: 2012-11-28
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0005] Aiming at the technical problem that the best focal plane position of the current space camera is difficult to determine, and the camera focal plane needs to be adjusted several times, an effective defocus compensation device for space cameras and its applicable defocus compensation method are proposed

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  • Out-of-focus compensation device of space camera and applicable out-of-focus compensation method of out-of-focus compensation device

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Embodiment Construction

[0035] The inventive idea of ​​the present invention is: a defocus compensation device for a space camera, comprising: a focusing mechanism, used to perform a focusing operation on the space camera; a focusing motor, used to provide power for the focusing mechanism; a motor drive circuit , used to drive and control the focusing motor according to the motor control signal; a focusing encoder, used to encode the position of the focusing surface; an imaging unit, used to collect image data; a system controller, used for the focusing mechanism , focus motor, motor drive circuit, focus encoder and imaging unit.

[0036] The defocus compensation method applicable to the defocus compensation device of the space camera comprises the following steps:

[0037] Step 1: debug the system controller for receiving camera commands, camera time and focus commands;

[0038] Step 2: the system controller controls the imaging unit to collect image data;

[0039] Step 3: Calculate the best focal...

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Abstract

The invention relates to the field of an aerospace camera focusing control technology and provides an out-of-focus compensation device of a space camera and an applicable out-of-focus compensation method of the out-of-focus compensation device. The out-of-focus compensation device of the space camera comprises a focusing mechanism, a focusing motor, a motor driving circuit, a focusing encoder, an imaging unit and a system controller. The applicable out-of-focus compensation method comprises the following steps that: debugging of receiving a shooting command, shooting time and a focusing command is carried out; the system controller controls the imaging unit to collect image data; an optimal focal plane position of the camera is calculated according to the image data, an image data position mark and a focal plane position; and the optimal focal plane position of the camera and the focusing command are sent to the system controller. The out-of-focus compensation method of the space camera disclosed by the invention simplifies the determination of the optimal focal plane position of the camera; and the optimal focal plane position can be determined by adjusting the focal plane position for one time in a camera shooting process.

Description

technical field [0001] The invention relates to the technical field of focusing control of aerospace cameras, and provides a defocus compensation device for a space camera and an applicable defocus compensation method thereof. Background technique [0002] Space cameras play an important role in the fields of meteorology, surveying and mapping, military affairs, and earth resource exploration. Ensuring the imaging quality of space cameras and keeping the focal plane of the camera at the best camera position is an important part of obtaining high-definition images. [0003] The impact of vibration and shock, vacuum environment, microgravity and other factors during the satellite launch process causes the space camera to defocus to a certain extent; in addition, the position of the focal plane of the camera varies according to the environment. There may be differences between the focal plane position and the focal plane position under the ground normal temperature and pressure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232G01C11/02
Inventor 徐抒岩于涛
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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