Design Of Colloidal Gold Test Instrument Based On CCD Image Processing

Colloidal gold test strip technology is now applied more widely as a biochemical detection method,the principle is the use of colloidal gold-labeled antibodies and binding by antigen and antibody test line(T-line)at the depth of color to reflect the measured solution the concentration of size.Combined with CCD image acquisition device and FPGA and DSP image processing techniques to detect color depth dipstick T line of further reagent concentration detected by reverse thinking to establish a standard curve gradation and concentration.Focus on instrument design that CCD image processing,which is the core technology of the image sensor denoising method,the image processing to be performed in image edge detection and image segmentation algorithms,combined with the structural characteristics of the test strip itself,you can Based on the traditional image processing method based on slightly modified,in order to achieve the desired results.In order to achieve the ultimate goal,this article will AN1616 F surveillance camera module as an image acquisition device generates the PAL video signal;as with SAA7114 video decoder chip,complete extraction of A/D conversion,and horizontal and vertical sync signals,where it made ATMEGA64 microcontroller initialized;FPGA capture an image buffer,wait for the DSP to extract data processing;AVR microcontroller through the matrix keyboard and 19264 LCD screen to display the required data.DSP is not here to exchange data directly with the microcontroller,but with an external Flash devices as a reserve,DSP through this device after the data to FPGA,microcontroller fur ther passed,this external Flash devices is to save the image as a reserve for the future and data.Instrument function tests using ractopamine solution,through experiments,to verify the stability and precision instruments detected both meet the requirements.