CN106161923A - A kind of image superposition and staged care system and method - Google Patents

Abstract

The present invention discloses a system and method for image superimposition and grading processing, which collects original images that need to be processed, converts the original images into digital images, performs superposition or grading processing on the digital images, and finally converts the processed Digital images are format converted and then transferred to a monitor for display. Compared with the prior art, the present invention adopts an integrated industrial design, which effectively saves space. High-precision automatic exposure, no need to set the exposure time and lens parameters, one shot can get a variety of exposure time effect images, and can display multiple images in full screen or split screen at the same time, which is convenient for observation and comparison. It also has a one-key printing function, which can print any rendering. It solves the technical problems of cumbersome acquisition of ideal images by users and troublesome manual processing of sample images in the later stage.

Description

A system and method for image superposition and grading processing

technical field

The invention belongs to the technical field of digital images, and in particular relates to an image superposition and classification processing system and method.

Background technique

The development of digital imaging technology has promoted the application of biological imaging, chemiluminescence imaging and fluorescence imaging in life science research, and the chemiluminescence imaging system with higher sensitivity and data analysis function has gradually replaced the traditional film method and has become an important part of every An essential instrument for laboratories involved in life science research. Conventional chemiluminescence imaging systems on the market are cumbersome to operate and take a long time. The process is as follows: 1. Open the image acquisition software; 2. Wait for the camera to cool down; 3. Turn on the corresponding light source; 4. Camera preview; 5. Adjust lens parameters (focus , aperture, distance); 6. Estimate the exposure time; 7. Shoot and check the image effect; 8. Modify the exposure time according to the effect; 9. Shoot again and check the image effect until it meets the requirements; 10. Save the picture.

Secondly, because different majors have different requirements, and different research objects have different luminous characteristics, the technical requirements for digital image display are also different, and the initial images obtained by traditional digital cameras may not be ideal results. Sometimes it is necessary to superimpose different images, sometimes it is necessary to display images in grades, and sometimes it is necessary to display images of different resolutions (gray levels) in the same window. It is cumbersome to obtain ideal images, and it is also troublesome to manually process sample images later.

In view of this, there is an urgent need to design an image superposition and grading processing system and method so as to overcome the above-mentioned defects in the prior art.

Contents of the invention

The technical problem to be solved by the present invention is to provide a system and method for image superimposition and hierarchical processing to solve the technical problems of cumbersome acquisition of ideal images and troublesome manual processing of sample images later.

The present invention can display superimposed, graded and split-screen images respectively after calculation and reprocessing of the collected original image basic materials according to requirements, so as to meet the needs of users.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

An image superposition and grading processing system, the system comprising:

The data acquisition module collects the original images that need to be processed;

an analog/digital conversion module, converting the original image into a digital image;

An image processing module, superimposing or grading the digital images;

The image display module converts the format of the processed digital image, and then transmits it to the display for display.

The data acquisition module uses a single-chip microcomputer to control parameter settings, automatically calculate exposure time, and collect images with one key.

The image processing module automatically calculates the grading data of the digital image and superimposes the image according to the total gray scale, grading quantity and grading multiple.

The image display module discards the highest and lowest pixels of the entire 16-bit image according to the proportion of invalid image data, and converts the remaining 16-bit image data into an 8-bit image.

An image superposition and grading processing method, the method comprising:

The data collection step is to collect the original images that need to be processed;

an analog/digital conversion step, converting the original image into a digital image;

Image processing step, superimposing or grading the digital images;

In the image display step, the format of the processed digital image is converted, and then transmitted to a monitor for display.

The data collection step adopts a single-chip microcomputer to control parameter setting, automatically calculate exposure time, and collect images with one key.

The image processing step automatically performs image grading data calculation and image superimposition on the digital image according to the total gray scale, grading quantity and grading multiple.

The image display step discards the highest and lowest pixels of the entire 16-bit image according to the proportion of invalid image data, and converts the remaining 16-bit image data into an 8-bit image.

The beneficial effects of the present invention are:

1. The image acquisition operation is simple. The invention adopts one-button operation: fully automatic exposure, one-button shooting of sample images, and automatically saves them to the U disk, without setting the exposure time and lens parameters, and the operation is simple, fast and practical.

2. High image quality after conversion. The data conversion module of the present invention adopts an improved conversion process to remove meaningless image data.

3. Realize hierarchical display. Grading display can directly observe the effect of different exposure time and sample images after post-processing, which saves the trouble of manually switching sample images with different exposure time and sample images after manual post-processing, and can get different gray levels in one display Video to meet the actual needs of different customers.

4. It has a one-key printing function, which can print any rendering.

Description of drawings

Figure 1 is a schematic diagram of the composition of the image superposition and grading processing system.

Fig. 2 is a flow chart of the image superposition and grading processing method.

detailed description

Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Embodiment one

Please refer to FIG. 1 , the data collected by the data collection module 11 are various image data, and the image collection can obtain sample images through optical cameras, infrared probes, and the like. It is mainly used to collect various data that make up the image, including layers, text, pixels, gray levels, brightness, etc.

As an implementation of the present invention, specifically, it includes an integrated dark box, a power supply, a digital CCD camera, a control and USB communication circuit, a white light lamp, an ultraviolet transmission table, a USB interface, a tablet computer, and buttons, and the white light lamp and the ultraviolet transmission table are set It is the sample light source; the relay control circuit with optocoupler isolation is used to reduce noise, and the high-precision digital cooling CCD camera with its own heat dissipation system is used to improve the clarity. The control circuit driven by the CCD camera is used to complete the data conversion between the serial port and the USB port, and the external U disk is supported; the single-chip microcomputer is used to control the parameter setting and automatically calculate the reasonable exposure time, so as to realize one-key shooting and obtain images with various exposure effects .

The above-mentioned one-button automatic shooting automatic exposure time (T) process is as follows:

$\mathrm{<span\; class="notranslate">\; T</span>}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; t</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; klg</span>}<span\; class="notranslate">\; (</span>\frac{\mathrm{<span\; class="notranslate">\; m</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; no</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 1</span>}}{\mathrm{<span\; class="notranslate">\; m</span>}}<span\; class="notranslate">\; )</span>$

In the formula: t0 is the pre-exposure time, the imaged grayscale array is G, k is an empirical constant, m=Max(G), n=Min(G).

Furthermore, a digital CCD camera is used in the data acquisition module, and the image data collected by the industrial-grade black-and-white CCD camera is 16-bit grayscale data, that is, the brightness of the collected sample is represented by numbers from 0 to 65535. Compared with civilian-grade color imaging cameras, although the color expression is abandoned, more details can be captured.

If the collected image is an analog image, it will be converted into a digital image through the analog/digital conversion module 12, and various data that make up the image, including layers, text, pixels, gray levels, brightness, etc., will be converted into digital signals and stored .

The digital image is transmitted to the image processing module 13 through the data line, and is superimposed or graded according to actual needs.

Specifically, the superimposition or grading process is realized through a split-screen process, and the user determines the total gray scale, grading quantity, and grading multiple, and then automatically calculates and displays the grading data of the image, and superimposes the image.

Specifically, the grading and overlay processing of images includes:

1. Determine the minimum effective gray scale: traverse all the pixels of the image, and find the smallest gray scale greater than 0 and less than 2^16.

2. Determine the maximum display gray scale of each graded image: MAX=USERMAX*(L-1)*M.

3. Image overlay:

g3(x,y)=g2(x,y)-g1(x,y)

g3, g2, and g1 are the superimposed image, image 2, and image 1, respectively, and x and y are the x-th row and y-column pixels of each image, respectively.

Among them, MIN=minimum effective gray scale;

USERMAX=user-defined maximum display gray scale;

MAX=the maximum gray scale that changes according to the specific grading number of the graded image;

L = series;

M = grading multiple;

After being superimposed and graded by the image processing module 13 , it enters the image display module 14 . First convert the number of digits of the processed image, and then transmit the converted image data to the monitor through the data line for display.

Because the image data collected by the CCD camera in the data acquisition module is 16-bit grayscale data, the common color liquid crystal display can only display 256 grayscale ranges, that is, 8-bit grayscale images. Based on this, a method of determining the interval is used for conversion. According to a large amount of experimental data, a proportion of invalid image data is obtained, and the brightest and darkest parts of the entire 16-bit image are discarded according to the ratio, so as to ensure that the most important 16-bit image data is converted into an 8-bit image for display. .

Among them, V16=the gray scale value of a certain pixel of the image, the range is 0-(2^16-1);

The grayscale value of a certain pixel of the V8 image on the display screen, ranging from 0-(2^8-1);

1. Establish a mapping table of 16-bit gray scale and 8-bit gray scale: mapping table [0-MIN]=0, mapping table [MIN+1～MAX-1]=(V16–MIN*(2^8-1) )/(MAX-MIN).

2. Use the mapping table to convert the 16-bit grayscale of the graded image into an 8-bit image: image pixel[V8]=mapping table[image pixel[V16]].

Further, this conversion method is also applicable to the process of superimposing and displaying the image shot under natural light and the image shot in the dark box.

Furthermore, the image display module 14 also has a one-key printing function, which can print any rendering.

As an implementation of the present invention, this module integrates a full-screen touch panel computer, which can simultaneously display multiple graded or superimposed images in full screen or split screen.

An image superimposing and grading processing system of the present invention has been introduced above. The present invention discloses an image superimposing and grading processing method while disclosing the above image superimposing and grading processing system.

Embodiment two

Please refer to Figure 2, the steps of the image superposition and grading processing method include:

Data collection 21, using one-button automatic shooting, wherein the automatic exposure process is:

1. Select a very short exposure time to automatically take a temporary image according to the light source on; 2. Traverse all the pixels in the image, and save the minimum gray value to the variable Min; 3. Traverse the pixels in the image to select the largest gray value Save the value to the variable Max; 4. Calculate the grayscale difference X=Max–Min; 5. Call different formulas according to the value of the grayscale difference X to calculate the automatic exposure time.

After the data acquisition 21 is completed, the original analog image collected is converted into a digital image through analog/digital conversion 22, and then according to the set function selection, it is judged whether superposition or grading processing is required 23, and if superimposition and grading processing is required, it enters image processing 24 step, otherwise, the output shows the original image.

The specific image processing and display steps are:

1. Determine the minimum effective gray scale: traverse all the pixels of the image, and find the smallest gray scale greater than 0 and less than 2^16.

2. Determine the maximum display gray scale of each graded image: MAX=USERMAX*(L-1)*M.

3. Image overlay:

g3(x,y)=g2(x,y)-g1(x,y)

4. Establish a mapping table of 16-bit gray scale and 8-bit gray scale: mapping table [0-MIN]=0, mapping table [MIN+1～MAX-1]=(V16–MIN*(2^8-1) )/(MAX-MIN).

5. Use the mapping table to convert the 16-bit grayscale of the graded image into an 8-bit image: image pixel[V8]=mapping table[image pixel[V16]].

The processed image is transmitted to the monitor for image display, and the graded or superimposed image is displayed, and multiple images can be displayed in full screen or split screen at the same time, which is convenient for observation and comparison.

To sum up, the present invention proposes an image superposition and hierarchical processing system and method. Compared with the prior art, the present invention adopts an integrated industrial design, which effectively saves space. High-precision automatic exposure, no need to set the exposure time and lens parameters, one shot can get a variety of exposure time effect images, and can display multiple images in full screen or split screen at the same time, which is convenient for observation and comparison. It also has a one-key printing function, which can print any rendering. It solves the technical problems of cumbersome acquisition of ideal images and troublesome manual processing of sample images in the later stage.

The description and application of the invention herein is illustrative and is not intended to limit the scope of the invention to the above-described embodiments. Variations and changes to the embodiments disclosed herein are possible, and substitutions and equivalents for various components of the embodiments are known to those of ordinary skill in the art. It should be clear to those skilled in the art that the present invention can be realized in other forms, structures, arrangements, proportions, and with other components, materials and parts without departing from the spirit or essential characteristics of the present invention. Other modifications and changes may be made to the embodiments disclosed herein without departing from the scope and spirit of the invention.

Claims (8)

1. an image superposition and staged care system, it is characterised in that described system includes:

Data acquisition module, gathers and needs raw video to be processed；

Analog/digital conversion module, is converted into digitized video by described raw video；

Image processing module, is overlapped described digitized video or staged care；

Image display module, carries out form conversion by the described digital picture processed, is then communicated to display Display.

Image superposition the most according to claim 1 and staged care system, it is characterised in that: described data acquisition Collection module uses Single-chip Controlling parameter to arrange, automatically calculates time of exposure, and a key gathers image.

Image superposition the most according to claim 1 and staged care system, it is characterised in that: at described image Described digitized video according to total GTG, classification quantity and classification multiple, is carried out image by reason module automatically Ranked data calculate and the superposition of image.

Image superposition the most according to claim 1 and staged care system, it is characterised in that: described image shows Show that module gives up, according to the accounting of invalid image data, the portion that in 16 images of view picture, pixel is the highest and minimum Point, it is converted into 8 bit images by remaining 16 image datas.

5. an image superposition and hierarchical processing method, it is characterised in that described method includes:

Data collection steps, gathers and needs raw video to be processed；

Analog/digital conversion step, is converted into digitized video by described raw video；

Image processing step, is overlapped described digitized video or staged care；

Image display step, carries out form conversion by the described digital picture processed, is then communicated to display Display.

Image superposition the most according to claim 5 and hierarchical processing method, it is characterised in that: described data acquisition Collection step uses Single-chip Controlling parameter to arrange, automatically calculates time of exposure, and a key gathers image.

Image superposition the most according to claim 5 and hierarchical processing method, it is characterised in that: at described image Described digitized video according to total GTG, classification quantity and classification multiple, is carried out image by reason step automatically Ranked data calculate and the superposition of image.

Image superposition the most according to claim 5 and hierarchical processing method, it is characterised in that: described image shows Show that step gives up, according to the accounting of invalid image data, the portion that in 16 images of view picture, pixel is the highest and minimum Point, it is converted into 8 bit images by remaining 16 image datas.