KR101626906B1 - Image improving monitor - Google Patents

Abstract

The present invention relate to an image enhancing monitor which can vividly restore an unclear image signal, input via a PC, in real time without deterioration of an image. The image enhancing monitor comprises: a body (10) in which a plurality of image input terminals (11) are installed; a display (20) which is installed in the body (10); a video processor (30) which is accommodated inside the body (10), separates an image signal, input via the image input terminals (11), into a color image signal in which color clarity is enhanced and a monochrome image signal in which clarity of an image edge is enhanced, combines the enhanced signals, and outputs the resulting signal; a display controller (40) which displays an image by outputting the image signal, output from the video processor (30), to the display (20); and a power supply unit (50) which supplies power for operation.

Description

Image improving monitor

The present invention relates to an image enhancement monitor, and more particularly, to an image enhancement monitor that restores an unascertained image signal input through a PC or a camera in a clear and real-time manner without deterioration in image quality.

In general, image restoration technology is a core technology used for reading surveillance cameras, producing movies using CG, and restoring and restoring images on a mobile. It is used for the purpose of not only creating high added value in various contents industries but also expanding surveillance activities have. In order to acquire a high-resolution image from a specific image, the image restoration technique includes training a plurality of low-resolution images in advance, storing pairs of high and low resolution images as training metrics, And restores a high-resolution image using a pair of patches already stored. The prior art related to such image restoration technology is disclosed in Patent Registration No. 10-1516757 under the name of operation method of image restoration device and image restoration device.

On the other hand, cameras (CCTV cameras) used for surveillance are environmentally friendly, for example, when environmental factors such as rain, snow, fog, It was difficult to monitor properly. Especially in military areas facing mountains or rivers, there is a lot of fog and snow and rain, and there are many obstacles in surveillance activities using cameras in these military areas. In addition, when the forest fires occurred, the firing point was not found due to the smoke, resulting in many obstacles to the forest fire evolution.

Therefore, in spite of various environmental factors, there is a growing need for an image enhancement technology capable of restoring unclear images in real time in order to accurately grasp a target object.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an image enhancement monitor capable of restoring an unascertained video signal inputted through a PC in real time without deteriorating picture quality.

It is another object of the present invention to provide an image enhancement monitor capable of clearly restoring an unascertained image signal input through a camera due to environmental factors such as rain, snow, fog, and forest fire, without deterioration in image quality in real time.

It is another object of the present invention to provide a system and method for realizing image restoration by connecting a cable branched from a PC or a camera without any separate setting process, And to provide an image enhancement monitor capable of enhancing the image quality.

According to an aspect of the present invention,
A main body 10 provided with a plurality of video input terminals 11; A display 20 installed in the main body 10; A video signal input through the video input terminal 11 is divided into a color video signal having improved color clarity and a black and white video signal having improved image contour sharpness and then synthesized A video processor (30) for outputting; A display controller (40) for outputting the image signal output from the video processor (30) to the display (20) and displaying the image signal as an image; And a power supply unit (50) for supplying power for operation;
The video processor 30 includes an input unit 31 for converting a video signal input to the video input terminal 11 into R, G, and B signals; A processing unit (32) for converting the R, G and B signals converted by the input unit (31) into a color image signal having improved color clarity and a monochrome image signal having improved image contour sharpness; And an output unit (33) for synthesizing and outputting the color image signal and the monochrome image signal converted by the processing unit (32);
The input unit 31 includes an RGB converter 31a for converting an image signal input through the image input terminal 11 into R, G, and B signals, and an R, G, and B signal attenuation and distortion And an RGB repeater 31b that amplifies the received signal to prevent it;
The processing unit 32 includes RGB branching units 32a, 32b, and 32c that divide the R, G, and B signals transmitted from the input unit 31 into two, respectively; A color video processing unit 32d for converting R, G, and B signals branched from the RGB branching units 32a, 32b, and 32c into color image signals having improved color clarity; And a monochrome video processing unit 32e for converting the R, G, and B signals branched from the RGB branching units 32a, 32b, and 32c into a monochrome image signal having improved image outline sharpness. do.

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In the present invention, the color video processing unit 32d removes gray (Black & White) from a color video signal and adjusts saturation to improve color clarity of a subject of an image; The monochrome video processing unit 32e removes the color sequence from the monochrome image and adjusts the brightness to enhance the image edge sharpness of the subject.

In the present invention, the video processor 30 is an FPGA (Field Programmable Gate Array).

According to the present invention, an input video signal is divided into a color video signal having improved color sharpness and a monochrome video signal having improved image contour sharpness, and then synthesized. Thus, unascertained video signals inputted through a PC or a camera can be displayed in real time It can be restored sharply without deterioration.

Also, due to environmental factors such as rain, snow, fog, and forest fire, it is possible to restore unclear video signals input through the camera in real time, even if the target object is not clearly captured through the camera. .

In addition, various configurations for image enhancement are integrated in the main body, and it is possible to perform image restoration in real time by simply connecting a cable branched from a PC or a camera without a separate setting process, , It is effective.

1 is a perspective view of an image enhancement monitor according to the present invention,
FIG. 2 is a diagram for explaining the configuration of the image enhancement monitor of FIG. 1;
3 is a diagram for explaining the configuration of the video processor of FIG. 2,
FIG. 4 is a diagram for explaining a method of removing gray series and adjusting saturation in the original image of FIG. 4;
FIG. 5 is a diagram for explaining a method of removing a color sequence and performing image contour correction in the original image of FIG. 4;
FIG. 6 is a diagram illustrating an example of a raw image before image enhancement input to the image enhancement monitor of FIG. 2;
FIG. 7 is a view showing a color image in which gray series is removed from a raw image and color sharpness is improved by the method of FIG. 4;
FIG. 8 is a diagram illustrating a black-and-white image in which a color sequence is removed from a raw image by the method of FIG. 5,
9 is a diagram showing a monochrome image in which an image outline is corrected in the image of Fig. 8,
FIG. 10 is a view for explaining the synthesis of the color image of FIG. 6 and the black and white image of FIG. 8;
FIG. 11 is a view for comparing a composite image synthesized in FIG. 10 and a raw image before image enhancement; FIG.

Hereinafter, an image enhancement monitor according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of an image enhancement monitor according to the present invention, FIG. 2 is a view for explaining a configuration of the image enhancement monitor of FIG. 1, and FIG. 3 is a diagram for explaining a configuration of a video processor of FIG. 4 is a diagram for explaining a method of removing a gray series and adjusting saturation in the original image of FIG. 4, FIG. 5 is a flowchart illustrating a method of removing a color series from an original image of FIG. 4 and performing image contour correction FIG.

As shown in the figure, the image enhancement monitor according to the present invention includes a main body 10 having a plurality of image input terminals 11; A display 20 installed in the main body 10; A video signal input through the video input terminal 11 is divided into a color video signal with improved color sharpness and a monochrome video signal with improved image contour sharpness, A processor (30); A display controller (40) for outputting the image signal output from the video processor (30) to the display (20) and displaying the image signal as an image; And a power supply unit 50 for supplying power for operation.

The main body 10 is provided with a plurality of video input terminals 11 to which an HDMI, DVI, and RGB cables connected to a PC or a camera are connected. The video input terminal 11 is preferably in the form of a connector and is connected to a PC or a camera through a simple operation of connecting a connector connected to the HDMI, DVI, and RGB cables to the video input terminal 11. [

The display 20 projects an image and may be realized by a cathode ray tube (CRT) as well as an LCD panel or an LED panel.

The video processor 30 includes an input unit 31 for converting a video signal input from the PC or the camera through the video input terminal 11 into R, G, and B signals; A processing unit (32) for converting the R, G, and B signals converted by the input unit (31) into a color image signal having improved color clarity and a monochrome image signal having improved image edge sharpness; And an output unit 33 for synthesizing and outputting the color image signal and the monochrome image signal converted by the processing unit 32.

More specifically, the input unit 31 converts the video signal input through the video input terminal 11 into R, G, and B signals and simultaneously amplifies them. To this end, the input unit 31 includes an RGB converter 31a for converting a DVI or HDMI video signal input from a PC or a camera into R, G, and B signals, and an R, G, And an RGB repeater 31b that amplifies the RGB repeater 31b.

The processing unit 32 performs video processing for converting the R, G, and B signals transmitted from the input unit 31 into a color image having improved color clarity and a monochrome image having improved image contour sharpness . To this end, the processing unit 32 includes RGB branching units 32a, 32b, and 32c that divide the R, G, and B signals transmitted from the input unit 31 into two, respectively; A color video processing unit 32d for converting the R, G, and B signals branched from the RGB branching units 32a, 32b, and 32c to a color video signal having improved color clarity; And a monochrome video processing unit 32e for converting the R, G, and B signals branched from the RGB branching units 32a, 32b, and 32c to a monochrome image signal having improved image outline sharpness.

The RGB branching sections 32a, 32b and 32c branch R, G and B signals inputted from the input section 32 into two R, G and B signals.

The color video processing unit 32d converts one R, G, and B signals branched from the RGB branching units 32a, 32b, and 32c into a color video signal having improved color clarity. For this, the color video processing unit 32d removes the gray (Black & White) from the branched R, G, and B signals and automatically adjusts the saturation as shown in FIG. That is, the color video processing unit 32d removes the hue of the gray series that hinders the sharpness of the image and adjusts the saturation to enhance the color sharpness.

For reference, saturation is also referred to as saturation (saturation), which indicates darkness and thinness of color, and it is expressed as "high saturation" in the case where nothing is mixed and is clear, clean, close to the primary color, . White and black are called achromatic because they have no saturation.

The monochrome video processing unit 32e converts the other R, G, and B signals branched from the RGB branching units 32a, 32b, and 32c to a monochrome image signal having improved image contour sharpness. For this, the monochrome video processing unit 32e removes the color sequence from the branched R, G, and B signals and adjusts the brightness to increase the brightness difference, as shown in FIG. As a result, the sharpness of the image contour of the subject can be increased, and the image contour that was not seen in the white series can be found and recovered clearly. At this time, in order to extract only the monochrome image, as shown in FIG. 5, only the same value of each color level is separately extracted to perform monochrome image video processing.

For example, if the average value of all the pixels of all the pixels is found and the value is smaller than a critical value arbitrarily set, an arbitrary adjusted value (adjustValue) is set to x, y If the mean value is greater than the threshold value, the applied value is subtracted from the brightness value of x, y.

For reference, luminosity refers to the degree of brightness of a color or light color of an object. This brightness is one of the sensible elements that distinguish the color. Because it depends on the brightness of the eyes, the brightness of the object or background is more certainly affected than the brightness of the subject itself. Accordingly, the monochrome video processing unit 32e adjusts the brightness so that the difference between the subject and the background is clearly distinguished.

The output unit 33 synthesizes a color image signal having improved color clarity and a monochrome image signal having improved image contour sharpness in the processing unit 32 and outputs the synthesized image signal. That is, the two color image signals and the monochrome image signals transmitted from the processing unit 32 are combined into a single image according to the video simultaneous signal.

The video processor 30 uses an FPGA (Field Programmable Gate Array) to divide R, G, and B signals having large video capacities into two and realizes image restoration in real time. More specifically, ) FPGA (Field Programmable Gate Array) is used. Here, one FPGA is used to perform modulation and demodulation of an image signal without deteriorating the image quality, and another FPGA applies an image signal modulated by R, G, and B to the image restoration through processing.

Since the video processor 30 is made up of a dual FPGA, the high capacity R, G, and B signals can be modulated in real time. Also, the image degradation phenomenon can be prevented through the above-described image accumulation (accumulation) method. Especially, in the area where there is no change of the image, the use of the video processing is minimized, so that the low power and real time clear images are obtained.

Next, the operation of the image enhancement monitor according to the present invention will be described.

FIG. 6 is a diagram illustrating an example of a raw image before image enhancement input to the image enhancement monitor of FIG. 2. FIG.

FIG. 4 shows a pre-image enhancement original image input through the image input terminal 11. The raw image may be the image currently being photographed, or any image such as a video provided by YouTube or various media. These raw video signals are converted into R, G, and B signals at the input unit 31 of the video processor 30.

FIG. 7 is a view showing a color image in which gray series is removed from a source image and color sharpness is improved by the method of FIG.

When the R, G, and B signals are converted into color image signals, the color video processing unit 32d extracts the color image from which the gray series (Black & White) is removed as shown in FIG. 4, Color saturation can be improved by automatically adjusting the saturation. In other words, the color video processing unit 32d removes the hue of the gray series which hinders the sharpness of the image and adjusts the saturation to enhance the color sharpness, thereby obtaining the color image as shown in the figure.

FIG. 8 is a diagram illustrating a black-and-white image in which a color sequence is removed from a source image by the method of FIG. 5, and FIG. 9 is a diagram illustrating a black-and-white image in which an image outline is corrected in the image of FIG.

When the R, G, and B signals are converted into monochrome images, the monochrome video processing unit 32e extracts monochrome images from which color sequences have been removed as shown in FIG. 5, and automatically adjusts the brightness of the extracted monochrome images, The sharpness of the screen can be improved. That is, the black-and-white video processing unit 32e removes the color of the color system that hinders the image outline of the image and adjusts the brightness to enhance the sharpness of the image outline. Accordingly, as shown in FIG. 9, .

FIG. 10 is a view for explaining the synthesis of the color image of FIG. 6 and the black and white image of FIG. 8, and FIG. 11 is a diagram for comparing the composite image synthesized in FIG. 10 and the original image before image enhancement.

As shown in the figure, when a color image with improved color sharpness and a monochrome image with improved image sharpness are synthesized, sharpness can be confirmed as compared with the original image before image enhancement.

As described above, according to the present invention, an input video signal is divided into a color video signal having improved color sharpness and a monochrome video signal having improved image contour sharpness, and then synthesized, thereby realizing an unambiguous video signal input through a PC or a camera It can be reconstructed clearly without deteriorating the image quality. That is, a video signal input through the MI and DVI signals is branched (gray-based, color-based) into two R, G and B colors (256 colors each) and then synthesized again according to the video synchronization signal. So that various images that can not be confirmed in the past can be confirmed.

Also, due to environmental factors such as rain, snow, fog, and forest fire, it is possible to restore unclear video signals input through the camera in real time, even if the target object is not clearly captured through the camera. .

In addition, various components for image enhancement are integrated into the main body, and the image can be restored in real time by simply connecting a cable branched from a PC or a camera without a separate setting process.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

10 ... Body 11 ... Video input terminal
20 ... display 30 ... video processor
31 ... input unit 31a ... RGB converter
31b ... RGB repeater 32 ... processing unit
32a, 32b, 33c ... RGB branching unit 32d ... Color video processing unit
32e ... Hook back video processing unit 33 ... Output unit
40 ... display controller 50 ... power supply

Claims (6)

A main body 10 provided with a plurality of video input terminals 11;
A display 20 installed in the main body 10;
A video signal input through the video input terminal 11 is divided into a color video signal having improved color clarity and a black and white video signal having improved image contour sharpness and then synthesized A video processor (30) for outputting;
A display controller (40) for outputting the image signal output from the video processor (30) to the display (20) and displaying the image signal as an image; And
And a power supply unit (50) for supplying power for operation;
The video processor 30 includes an input unit 31 for converting a video signal input to the video input terminal 11 into R, G, and B signals; A processing unit (32) for converting the R, G and B signals converted by the input unit (31) into a color image signal having improved color clarity and a monochrome image signal having improved image contour sharpness; And an output unit (33) for synthesizing and outputting the color image signal and the monochrome image signal converted by the processing unit (32);
The input unit 31 includes an RGB converter 31a for converting an image signal input through the image input terminal 11 into R, G, and B signals, and an R, G, and B signal attenuation and distortion And an RGB repeater 31b that amplifies the received signal to prevent it;
The processing unit 32 includes RGB branching units 32a, 32b, and 32c that divide the R, G, and B signals transmitted from the input unit 31 into two, respectively; A color video processing unit 32d for converting R, G, and B signals branched from the RGB branching units 32a, 32b, and 32c into color image signals having improved color clarity; And a monochrome video processing unit 32e for converting the R, G, and B signals branched from the RGB branching units 32a, 32b, and 32c into a monochrome image signal having improved image outline sharpness. Image enhancement monitor. delete delete delete The method according to claim 1,
The color video processing unit 32d removes the gray system (Black & White) from the color video signal and adjusts the saturation to improve the color clarity of the subject of the image;
Wherein the monochrome video processing unit (32e) removes the color sequence from the monochrome image and adjusts the brightness to enhance the sharpness of the image edge of the subject. The method according to claim 1,
Wherein the video processor (30) is an FPGA (Field Programmable Gate Array).

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