Micro-imaging automatic focusing system based on FPGA and NIOSII
An auto-focus and micro-imaging technology, which is applied to TV system components, image communication, color TV components, etc., can solve problems such as long focusing time, unstable focusing, and poor focusing accuracy, and achieve fast focusing time , high focus precision, and stable focus
Inactive Publication Date: 2017-03-08
苏州坤镥光电科技有限公司
View PDF4 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] Auto Focus (Auto Focus) is to use the principle of object light reflection, the reflected light is accepted by the sensor CCD on the camera, through computer processing, the way to drive the electric focus device to focus is called auto focus, more and more auto focus technology It is used in various imaging systems, but there are few automatic autofocus systems used in microscopes. The existing microscopic autofocus systems have problems such as too long focusing time, poor focusing accuracy, and unstable focusing.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0009] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with the embodiments and accompanying drawings. The embodiments are only used to explain the present invention and do not constitute a limitation to the protection scope of the present invention.
[0010] figure 1 An embodiment of a microscopic imaging autofocus system based on FPGA and NIOS II of the present invention is shown, including a reticle 1, an image sensor 2, an optical lens 3, a CCD camera 4, an autofocus controller 7, and information processing 8, the reticle 1 is provided with an encoder 9, the encoder 9 feeds back the signal to the I / O sensor 10 on the autofocus controller 7, and the autofocus controller 7 receives the signal, The reticle 1 is imaged on the photosensitive surface of the image sensor 2 through the optical lens 3, and the initial information is transmitted to the I / O sensor 10 on the autofocus controller 7 by t...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a micro-imaging automatic focusing system based on FPGA and NIOSII. According to the micro-imaging automatic focusing system based on the FPGA and NIOSII, image data are stored in a synchronous dynamic random access memory; an inner embedded processor executes an automatic focusing algorithm program for processing image data and activates a servo motor according to a processing result through a servo controller. The servo motor drives an optical lens to move so that an image which is formed through the lens is in a photosensitive surface of a CCD, thereby obtaining a clear image. An LCD display screen in the system converts the image data stored in the SDRAM to an image through controlling by the FPGA. Through a display screen, an image change process from fuzzy to clear can be observed. The micro-imaging automatic focusing system realizes short focusing time and can realize 0.3-0.8 second in focusing (50-time objective lens), high focusing precision (+ / - depth-of-field), and high focusing stability.
Description
technical field [0001] The invention relates to the field of autofocus technology, in particular to a microscopic imaging autofocus system based on FPGA and NIOSII Background technique [0002] Auto Focus (Auto Focus) is to use the principle of object light reflection, the reflected light is accepted by the sensor CCD on the camera, through computer processing, the way to drive the electric focus device to focus is called auto focus, more and more auto focus technology It is used in various imaging systems, but there are few autofocus systems used in microscopes. The existing microscopic autofocus systems have problems such as long focusing time, poor focusing accuracy, and unstable focusing. . Contents of the invention [0003] In order to overcome the above defects, the present invention provides a microscopic imaging autofocus system based on FPGA and NIOS II. [0004] The technical solution adopted by the present invention in order to solve its technical problems i...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232
CPCH04N23/67
Inventor 赵长坤
Owner 苏州坤镥光电科技有限公司