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Panoramic scanning and imaging method and system based on colored CCD

A technology of scanning imaging and panorama, which is applied in the field of panorama scanning imaging and its system based on color CCD, can solve the problems of high price and difficult purchase, achieve good resolution, unlimited depth of field, and overcome the effects of low resolution

Active Publication Date: 2008-07-16
ZHEJIANG UNIV
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Problems solved by technology

This patent utilizes a large-area area array CCD, which is not only expensive, but also difficult to purchase domestically.

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  • Panoramic scanning and imaging method and system based on colored CCD
  • Panoramic scanning and imaging method and system based on colored CCD

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Embodiment Construction

[0012] The panoramic scanning imaging method based on the color CCD is to use the hemispherical panoramic annular lens PAL to form a ring image, and the area array CCD or linear array CCD scans the image along the ring image position, and each frame image is transmitted to the computer through the data line. Computer image processing stitches each image and expands it into a panoramic image. The selected area array image sensor or linear array CCD is fixed on the mechanical turntable, and the turntable is connected to the motor by bearings, and the scanning speed of the image sensor is controlled by controlling the rotation speed of the turntable. Because the image sensor has a certain response time, it is necessary to optimize the rotation speed of the motor through the motor control software, so that the motor can cooperate with the image collection speed to collect images with good image quality. The collected images are transmitted to the computer through the data transmis...

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Abstract

The invention discloses a colorized CCD panoramic scanning imaging system and a system thereof, wherein the method comprises the following steps of: using a semi-spherical panoramic annular lens (PAL) to form an annular image; imaging by scanning of area-array CCDs or linear-array CCDs arranged along annular image; and transmitting images into a computer which joints the images for expanding a panoramic image. The system is that: the CCDs are arranged in a rotatable mechanical rotary table and are controlled by a motor to rotate, and the motor is controlled by a computer through a motor control circuit module, thereby controlling CCD rotary scanning panoramic imaging; the images captured is transmitted into a computer through a data transmission interface, and the computer uses an image processing program to joint the images and expands the images. The invention, by use of a computer vision technique, can create a real-time 360-degree panoramic image which has not only infinite depth of field, but also high resolution; a simple linear algorithm can perform orthoscopic calibration on the panoramic image. The invention is particularly applicable in real time monitoring, air defense, etc fields.

Description

technical field [0001] The invention relates to a panoramic scanning imaging method and system based on a color CCD. Background technique [0002] Panoramic imaging technology uses a special imaging device to obtain a field of view larger than 180 degrees hemisphere or a full 360 degrees in the horizontal or vertical direction. The traditional optical system follows the central projection method. In order to obtain 360° panoramic imaging, the entire imaging system must be rotated, and the panoramic image is obtained by splicing images collected in various directions. The disadvantage of this method is that the imaging of the entire field of view cannot be observed at the same time, and it is difficult to control the image acquisition error caused by the rotation of the entire imaging system. In order to overcome this shortcoming, people proposed the planar cylindrical projection method FCP, and based on this, designed the PAL lens, that is, the panoramic annular lens, which...

Claims

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Application Information

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IPC IPC(8): G03B37/02G03B37/00G02B7/02G02B3/00H04N5/225G06F3/00
Inventor 肖潇余磊白剑
Owner ZHEJIANG UNIV
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