KR101076372B1 - Monitoring system and apparatus using camera module - Google Patents

Abstract

The present invention relates to a monitoring apparatus and a method using a camera module, the method of the present invention comprises the steps of photographing a subject at a first resolution, storing the image data of the first resolution, the event by monitoring the stored image data Determining whether or not an occurrence occurs, if the event does not occur, down scanning and outputting the entire image data having the first resolution as image data having a second resolution lower than the first resolution, and when the event occurs, the first And selecting and outputting a specific region having the second resolution based on the pixel in which the event occurs among the image data having the resolution.

Camera module, VGA, 1.3M, transmission line, resolution

Description

Monitoring system and apparatus using camera module

The present invention relates to a monitoring apparatus and method using a camera module.

As the television broadcasting standard has evolved from NTSC, PAL and SECAM to the digital HDTV, the equipment of the security monitoring device that followed the analog television broadcasting standard is also compatible with the digital broadcasting protocol. Development is needed.

The reason why it is not possible to go directly from the product with the old standard to the product of the new standard at every transitional time is because it involves many problems.

The equipment for the security monitoring device is very slow to replace the equipment with the new standard because there are many specialized equipment for the security monitoring device and many expensive products.

The security system is largely divided into a camera that captures the scene and stores it, and a monitor that receives and displays the captured image from the camera.

Conventional cameras have taken images using a low pixel sensor with VGA resolution (640x480 pixel), encoded and stored them.

However, since the decoding solution supports 720X576 resolution, the VGA-level image is broken when the stored image is decoded and enlarged.

In addition, when replacing the camera using a high-resolution high-resolution sensor in the conventional security system, there is a problem that the cost of replacing the transmission line occurs.

The present invention provides a monitoring apparatus and a monitoring method using a camera module that can provide a high resolution image using a conventional VGA-class line.

According to an aspect of the present invention, a camera module for photographing and storing a subject using a high pixel sensor having a first resolution, and a transmission line connected to the camera module for transmitting image data of a second resolution lower than the first resolution And a monitor unit connected to the transmission line to display the image data.

In this case, the camera module outputs the image data of the first resolution as the image data of the second resolution so as to correspond to the transmission line.

According to another feature of the present invention, photographing a subject at a first resolution, storing image data of the first resolution, monitoring the stored image data to determine whether an event occurs, if the event does not occur And scanning the entire image data of the first resolution with image data having a second resolution lower than the first resolution and outputting the image data. When an event occurs, the image data of the first resolution is focused on the pixel in which the event occurs. There is provided a monitoring method using a camera module, including selecting and outputting a part of a specific area having the second resolution.

According to an embodiment of the present invention, a camera module having a sensor having a first resolution higher than the second resolution is connected to a transmission line for transmitting an image having a second resolution, and when the event does not occur, the image having the first resolution is output to the second. By down-scanning an image having a resolution and transmitting it through a transmission line, an image can be transmitted using an existing transmission line.

In addition, when an event occurs, by extracting an image of a specific area of the second resolution centered on the pixel where the event occurs and transmitting the image to a transmission line, the monitor can perform a digital zoom on the image of the specific area where the event occurs. You can monitor clearly together.

As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the second component may be referred to as the first component, and similarly, the first component may also be referred to as the second component.

When a component is said to be "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that another component may exist in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Now, a monitoring apparatus and method using a camera module according to an embodiment of the present invention will be described in detail with reference to the drawings, and the same or corresponding components regardless of the reference numerals are assigned the same reference numerals and are duplicated thereto. The description may be omitted.

1 is a schematic configuration diagram of a monitoring device using a camera module according to an embodiment of the present invention.

As shown in FIG. 1, a monitoring apparatus using a camera module includes a camera module 100 for capturing an image and storing the image data as an image data, a monitor unit 200 receiving and displaying the image data stored in the camera module, and the camera. It includes a transmission line 300 which is a VGA class line connecting the module 100 and the monitor unit 200.

The camera module 100 includes an image capturing unit 110, an image storing unit 120, and an image controlling unit 130.

The image capturing unit 110 collects light using a lens having a zoom and focus function, and converts light energy of the lens into an electrical signal (digital signal) using a high pixel sensor having a resolution of 1.3M (1280 × 1024 pixels). Thus, the subject can be photographed in a mega pixel image.

The image storage unit 120 stores the mega pixel image captured by the image capturing unit 110 as image data.

The image controller 130 processes the image data to correspond to a path for transmitting the image data stored in the image image storage 120 and outputs the image data to the monitor 200.

More specifically, the present invention relates to a camera module 100 for transmitting an image through a conventional VGA-class transmission line 300, the image control unit 130 converts the image data in units of megapixels to VGA-level image data Down-scanning, the down-scanned image data is converted into analog image data and output to the monitor unit 200.

In addition, the image controller 130 compares the image data stored in the image storage unit 120 with previous image data in real time to determine whether an event occurs.

When an event occurs, the image controller 130 converts image data of a specific area including 640 × 480 pixels based on the pixel where the event occurs into analog image data and transmits the image data to the monitor 200. Then, the specific region is an image having a VGA resolution, and the monitor may check an image having a higher quality than the specific region is enlarged from the existing VGA image through the monitor 200.

As described above, in the present invention, a camera module having a high pixel sensor photographs a subject, down-scans and transmits a high pixel image appropriately for a VGA class line, and when an event occurs, a specific pixel having a VGA class pixel centered on the pixel where the event occurs. By transmitting the video data of the area to the VGA line, the monitor can more clearly monitor the image of the specific area where the event occurred.

Referring to the operation of the monitoring device using the camera module configured as described above are as follows.

If no event occurs, the mega pixel image captured by the image capturing unit 110 is down-scanned as a VGA-level image and transmitted to the monitor unit 200.

However, when an event occurs, the mega pixel image photographed by the image capturing unit 110 includes a monitor unit 200 through which the image data of a specific region having VGA-level pixels centered on the pixel where the event occurs is transmitted through the transmission line 300. Is sent).

2 is a flowchart illustrating a monitoring method using a camera module according to an embodiment of the present invention, and FIG. 3 is a view illustrating a monitoring method using a camera module according to an embodiment of the present invention.

As illustrated in FIG. 2, the image capturing unit 110 including the high pixel sensor having the first resolution captures a subject at the first resolution (S401). In this case, the image photographed by the image capturing unit 110 is a digital signal having luminance and color coordinates (YCbCr). The high pixel sensor applied in the embodiment of the present invention is a sensor having a resolution of 1.3M (mega pixel), and the first resolution means an image composed of a total of 1280 X 1024 pixels.

In addition, the image storage unit 120 stores image data having a first resolution, which is a digital signal captured by the image capturing unit 110 (S402).

The image controller 130 monitors the image data stored in the image storage unit 120 in real time and detects a change in YCbCr between the nth stored image data and the n−1th stored image data.

In this case, when the YCbCr of any one pixel of the nth stored image data has not changed compared to the n-1th stored image data (S403), the image controller 130 down-scans the image data having the first resolution and transmits the VGA level transmission line. In operation S404, the image data is converted into image data having a second resolution corresponding to 300. In this case, the second resolution refers to an image composed of 640 × 480 pixels lower than the first resolution.

The image controller 130 converts the image data of the second resolution into analog image data (S405) and transmits the image data to the monitor unit 200 through the transmission line 300.

In contrast, when the YCbCr of one pixel of the nth stored image data is changed compared to the n-1th stored image data, the image controller 130 determines that an event has occurred (S403).

When an event occurs, the image controller 130 selects a specific area to have a second resolution centering on the pixel in which the event occurs (S407). Then, the video data of the specific region is converted into analog video data (S408) and transmitted to the monitor unit 200 via the transmission line 300 (S409).

As described above, in the present invention, a camera module having a first resolution is connected to a transmission line for transmitting an image having a second resolution, and when an event does not occur, the first resolution is down-scanned as an image having a second resolution. By transmitting through the transmission line and, when an event occurs, extract the image of the specific area of the second resolution centered on the pixel where the event occurs and transmit the image to the transmission line. You can monitor as clearly as the zoomed effect.

In the present invention, the image controller 130 determines whether an event occurs and selects and transmits a specific region. However, the monitor may select the specific region from the monitor 200. Then, by monitoring an image of a specific region of the image data photographed at the first resolution at the second resolution, a fine portion may be clearly identified as compared to enlarging the specific region of the image data photographed at the second resolution.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

1 is a schematic configuration diagram of a monitoring device using a camera module according to an embodiment of the present invention.

2 is a flowchart illustrating a monitoring method using a camera module according to an exemplary embodiment of the present invention.

3 is a view showing a monitoring method using a camera module according to an embodiment of the present invention.

Claims (6)

A camera module for photographing and storing a subject using a high pixel sensor having a first resolution, A transmission line connected to the camera module to transmit image data having a second resolution lower than the first resolution, and A monitor unit connected to the transmission line to display the image data; The camera module, An image photographing unit photographing a subject using the high pixel sensor having the first resolution; An image storage unit storing image data of the image capturing unit, and It is determined whether an event occurs by monitoring the image data stored in the image storage unit. If the event does not occur, the image data having the first resolution is down-scanned to the second resolution and output to the transmission line. And a video controller which outputs a specific area having a second resolution to the transmission line centering on a pixel in which an event occurs. delete The method of claim 1, The video controller, And a camera module for detecting an event occurrence by detecting a change in luminance and color coordinates (YCbCr) between the n-th image data stored in the image storage unit and the n-th image data stored in the image storage unit. The method of claim 1, And the monitor unit is provided with means for allowing a monitor to select a specific region of the image data of the first resolution. Photographing the subject at the first resolution, Storing image data of the first resolution; Monitoring the stored image data to determine whether an event has occurred, and If an event does not occur, the entire image data of the first resolution is down-scanned and output as image data having a second resolution lower than the first resolution, and when an event occurs, an event occurs among the image data of the first resolution. And selecting a part of the specific area having the second resolution based on the pixel to output the selected area. The method of claim 5, Determining whether the event occurs, A monitoring method using a camera module that detects a change in luminance and color coordinates (YCbCr) between an nth stored image data and an n-1th stored image data to determine whether an event occurs.

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