Systems and methods for adjusting position of photosensitive chip of image acquisition device

Patent metadata

Field	Value
Publication number	US-2021185196-A1
Application number	US-202117185881-A
Country	US
Kind code	A1
Filing date	Feb 25, 2021
Priority date	Aug 28, 2018
Publication date	Jun 17, 2021
Grant date	—

Abstract

The present disclosure provides a method for adjusting a position of a photosensitive chip of an image acquisition device. The method may include determining a first symmetrical axis and a second symmetrical axis of the photosensitive chip. The first symmetrical axis may divide the photosensitive chip into a first portion and a second portion, and the second symmetrical axis may divide the photosensitive chip into a third portion and a fourth portion. The method may further include adjusting the position of the photosensitive chip from an initial position to an adjusted position. When the photosensitive chip is at the adjusted position, a first image resolution corresponding to the first portion may be substantially equal to a second image resolution corresponding to the second portion, and a third image resolution corresponding to the third portion may be substantially equal to a fourth image resolution corresponding to the fourth portion.

First claim

1 . A system for adjusting a position of a photosensitive chip of an image acquisition device, comprising:
at least one storage device storing a set of instructions; and at least one processor configured to communicate with the at least one storage device, wherein when executing the set of instructions, the at least one processor is configured to direct the system to perform operations including:
determining a first symmetrical axis and a second symmetrical axis of the photosensitive chip, the first symmetrical axis being parallel with an intersection line between the photosensitive chip and a mounting base of the photosensitive chip, the first symmetrical axis dividing the photosensitive chip into a first portion and a second portion, and the second symmetrical axis being perpendicular to the first symmetrical axis at a central point of the photosensitive chip and dividing the photosensitive chip into a third portion and a fourth portion; and
adjusting the position of the photosensitive chip from an initial position to an adjusted position, wherein when the photosensitive chip is at the adjusted position, a first image resolution corresponding to the first portion is substantially equal to a second image resolution corresponding to the second portion, and a third image resolution corresponding to the third portion is substantially equal to a fourth image resolution corresponding to the fourth portion.

2 . The system of claim 1 , wherein to adjust the position of the photosensitive chip from an initial position to an adjusted position, the at least one processor is configured to direct the system to perform operations including:
adjusting the position of the photosensitive chip from the initial position to a first position by adjusting a first angle between the photosensitive chip and the mounting base, wherein when the photosensitive chip is at the first position, the first image resolution is substantially equal to the second image resolution; determining a first reference plane parallel with the photosensitive chip at the first position; and adjusting the position of the photosensitive chip from the first position to a second position by adjusting a second angle between the photosensitive chip and the first reference plane, wherein when the photosensitive chip is at the second position, the third image resolution is substantially equal to the fourth image resolution.

3 . The system of claim 2 , wherein the at least one processor is further configured to direct the system to perform operations including:
determining whether the first image resolution is substantially equal to the second image resolution when the photosensitive chip is at the second position; and in response to a determination that the first image resolution is substantially equal to the second image resolution when the photosensitive chip is at the second position, designating the second position as the adjusted position, or in response to a determination that the first image resolution is not substantially equal to the second image resolution when the photosensitive chip is at the second position, adjusting the position of the photosensitive chip to the adjusted position by further adjusting the first angle between the photosensitive chip and the mounting base.

4 . The system of claim 1 , wherein to adjust the position of the photosensitive chip from an initial position to an adjusted position, the at least one processor is further configured to direct the system to perform operations including:
determining a second reference plane parallel with the photosensitive chip at the initial position; adjusting the position of the photosensitive chip from the initial position to a third position by adjusting a third angle between the photosensitive chip and the second reference plane, wherein when the photosensitive chip is at the third position, the third image resolution is substantially equal to the fourth image resolution; and adjusting the position of the photosensitive chip from the third position to a fourth position by adjusting a first angle between the photosensitive chip and the mounting base, wherein when the photosensitive chip is at the fourth position, the first image resolution is substantially equal to the second image resolution.

5 . The system of claim 4 , wherein the at least one processor is further configured to direct the system to perform operations including:
determining whether the third image resolution is substantially equal to the fourth image resolution when the photosensitive chip is at the fourth position; and in response to a determination that the third image resolution is substantially equal to the fourth image resolution when the photosensitive chip is at the fourth position, designating the fourth position as the adjusted position, or in response to a determination that the third image resolution is not substantially equal to the fourth image resolution when the photosensitive chip is at the fourth position, adjusting the position of the photosensitive chip to the adjusted position by further adjusting the third angle between the photosensitive chip and the reference plane.

6 . The system of claim 1 , wherein the position of the photosensitive chip is adjusted via a position adjustment device of the photosensitive chip, the position adjustment device comprising:
a first adjustment mechanism configured to control the photosensitive chip to rotate around a first rotation axis; and a second adjustment mechanism mechanically connected to the first adjustment mechanism and configured to control the photosensitive chip to rotate around a second rotation axis, wherein: the photosensitive chip is detachably mounted on the second adjustment mechanism, and the first rotation axis forms an angle with the second rotation axis.

7 . A position adjustment device for adjusting a position of a photosensitive chip of an image acquisition device, comprising:
a first adjustment mechanism configured to control the photosensitive chip to rotate around a first rotation axis; and a second adjustment mechanism mechanically connected to the first adjustment mechanism and configured to control the photosensitive chip to rotate around a second rotation axis, wherein:
the photosensitive chip is detachably mounted on the second adjustment mechanism, and
the first rotation axis forms an angle with the second rotation axis.

8 . The position adjustment device of claim 7 , wherein the first adjustment mechanism comprises:
a mounting base having a first side parallel with the first rotation axis and a second side opposite to the first side of the mounting base; a first plate having a first side parallel with the first rotation axis and a second side opposite to the first side of the first plate, the first side of the first plate being mechanically connected to the first side of the mounting base; and a first adjustment unit mechanically connected to the second side of the mounting base and the second side of the first plate, the first adjustment unit being configured to adjust a distance between the second side of the mounting base and the second side of the first plate such that the photosensitive chip rotates around the first rotation axis.

9 . The position adjustment device of claim 8 , wherein the first adjustment mechanism further comprises:
a first connector configured to establish a mechanical connection between the first side of the first plate and the first side of the mounting base.

10 . The position adjustment device of claim 9 , wherein the first plate, the mounting base, and the first connector form an integral part.

11 . The position adjustment device of claim 8 , the first adjust

Assignees

• Zhejiang Dahua Technology Co

Inventors

• Zhan Hui
• Xu Liang
• Liu Yanhui
• Luo Zhengchun
• Shuai Shuxin

Classifications

• H04N23/54 Primary

  Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils · CPC title

• H04N23/951

  by using two or more images to influence resolution, frame rate or aspect ratio · CPC title

• H04N5/2253 Primary

  Electricity · mapped topic

• H04N5/23232

  Electricity · mapped topic