KR20030095384A - Device of acquiring underwater image by either the acoustic sonar or video camera - Google Patents

Abstract

PURPOSE: An ultrasonic and camera compatible underwater image acquiring apparatus is provided to maximize the efficiency of the search and observation works under the water and to finish all the underwater observation work at once, thereby supplying a relatively small underwater image acquiring apparatus. CONSTITUTION: An ultrasonic and camera compatible underwater image acquiring apparatus includes a camera module(3), an ultrasonic transmitting and receiving device(4), an image signal selection member, a position information acquiring member(5) and a depth of water sensing sensor. The camera module(3) is provided with a camera for acquiring the image of the object. The ultrasonic transmitting and receiving device(4) acquires the image signal of the object. The image signal selection member selectively acquires the image signal received from the camera module(3) and the ultrasonic transmitting and receiving device(4). The position information acquiring member(5) represents the current position and the trajectory information of the ship together with the GPS. And, the depth of water sensing sensor incorporated into the camera module(3) or the ultrasonic transmitting and receiving device(4) transmits the depth of the water to the ship in a real time.

Description

Device of acquiring underwater image by either the acoustic sonar or video camera}

According to the present invention, by using two monitors to selectively use an ultrasonic camera or an underwater camera as needed, the turbidity of the underwater is relatively high using a single monitor, so that the sonar is ultrasonically underwater in the water where it is difficult to check the object by the camera. Means for transmitting signals and receiving ultrasonic waves reflected from objects to display underwater objects in real time on a monitor, and underwater video signals input from multiple cameras in relatively transparent underwater where cameras are easy to shoot underwater. By using a channel, the unit for observing and recording underwater objects or terrain in real time as a unit enables the exploration and observation of various underwater conditions at sea or inland, increasing the efficiency of work and performing all observations at once. Economical underwater to complete To implement the observation and recording device.

Although various types of underwater ultrasonic imaging equipment and image acquisition equipment using underwater cameras are commercially available in the world, wide-area ultrasonic image acquisition and underwater video recording systems are recognized as totally separate equipments. Acquisitions were made. In other words, video recording is limited to the place where the shallow depth and the turbidity of the water are relatively low by the diver, and the acquisition of the video signal of the underwater object by the ultrasonic transceiver is possible regardless of the place or the depth of the turbidity. It has been used to detect underwater objects and terrain by receiving reflected waves reflected from a subject and displaying the size and shape of the underwater object on the display panel as an image. However, because they are composed of separate devices, it is not only necessary to economically double expenses in order to equip them at the same time, but there is a problem that a relatively large amount of installation space is required by installing two devices at the same time. In addition, there was a problem that could not be used to apply more efficient equipment depending on the state of underwater.

The technical problem to be achieved by the present invention is to recognize the problems of the prior art as described above and to improve the efficiency of the overall work in the search and recording of underwater objects, wide area (300m wide) ultrasonic scanning system (Side Scan Sonar) and multi-directional The present invention is to implement an underwater video acquisition device using a single underwater multi-directional CCTV that acquires video images of 360-degree all directions using a camera in real time. The ultrasonic sonar according to the present invention transmits an acoustic signal underwater, and the ultrasonic wave transmitted from the object is reflected by the object is received by the ultrasonic receiver to display the underwater object in real time on the monitor, a plurality of cameras and a plurality of By using video signal processing channel, the video signal controller that observes and records underwater objects or terrain in real time is configured as a unit to maximize the efficiency of searching and observing at sea or inland, and to finish all underwater observations at once. It is possible to provide an underwater image acquisition device that is economical and relatively small in volume. In addition, the present invention includes programs for recording current depth information and location information (GPS) together on a screen in real time and displaying underwater 3D topography. Through this, the purpose of the search, observation, and recording of underwater objects can be acquired at once by one device on the surface of water and terrain regardless of turbidity of water and amount of sunlight. . In addition, it is possible to obtain a clearer video signal of the underwater subject by selectively applying more efficient equipment according to the underwater condition, or to perform a faster underwater exploration work by using both equipment simultaneously.

1 is a diagram of an underwater image acquisition apparatus for ultrasound and camera for underwater observation according to the present invention.

Figure 2 is a view of the underwater ultrasound and camera image acquisition device according to the present invention.

Figure 3 is an actual implementation of the image acquisition device according to the present invention.

<Description of drawing number>

1: battery box 2. Display panel and signal processor 3: camera module

4: ultrasonic transceiver 5: GPS geolocation device 6: connection cable

In the present invention, in order to increase the efficiency of the overall operation in the search and recording / storage of underwater objects, a real-time underwater image of a wide area (300m wide) side-scan sonar and 360-degree video images for all directions is obtained. An image acquisition apparatus including a direction CCTV camera and displaying an image signal input through these ultrasonic transceivers and a multidirectional camera using one display panel is provided. Looking at the specific construction means for achieving the present invention, a multi-directional image having a depth sensor for obtaining depth information, a GPS system for obtaining position information, and a plurality of cameras and can acquire the video signal in the multi-direction Displaying an acquisition camera module, an ultrasonic transceiver for acquiring an image of an underwater object, a system (device) controller for controlling these devices, and an image signal of a subject input from the ultrasonic transmitter and camera module on a display panel And a digital image signal processing unit for processing a signal, and an image signal selecting unit capable of selectively utilizing image acquisition by the underwater camera and image acquisition by an ultrasonic transceiver. The image signal processing unit according to the present invention has a built-in program that can selectively process the image signal processing by the ultrasonic transceiver and the image signal input by a plurality of cameras, and when it is necessary to observe a plurality of image signals at the same time It is designed to divide the screen by the number of installed cameras and to observe or record. The water depth sensor according to the present invention is installed in an ultrasonic transceiver or underwater camera submerged in water, converts the water pressure that appears according to the depth of work to be converted into an electrical signal to convert the text through the MCU and ADC to synchronize each screen in real time And display on a display panel (LCD, organic EL, etc.). The positional information is displayed on the display panel (LCD, organic EL, etc.) in text by means of the same means as the depth information on the display panel. The underwater camera module may be configured in various ways. For example, the signal processing control unit according to the present invention may be provided with a plurality of lighting devices and a plurality of cameras at the same time, one camera in one lighting device, or only a camera without attaching a lighting device. The power and other control signals supplied for their operation are all supplied to the ultrasonic transceiver and the camera module through the transmission cable. The video signals inputted from the camera module are displayed by dividing the video signals for each camera on the display screen in units of frames in the video signal processor having a plurality of channels. The image signal acquired by the ultrasonic transceiver includes an ultrasonic receiver for generating ultrasonic waves in the water and receiving ultrasonic waves reflected from the object inside the water and the ground under water, and the analog signal acquired by the ultrasonic receiver. The video signal is very weak and contains a lot of noise, so it is a digital signal converter that amplifies it, removes the noise mixed in the signal, and converts it into a digital signal, and the fish, objects, and terrain inside the water using the converted digital signal. And a digital video signal processing unit for processing the video signals in scan line units and storing them in a memory, and transmitting and displaying the digital video signals stored in scan memory units in the memory of the digital video signal processing unit to a display panel (LCD, organic EL, etc.). Consists of The depth sensor is installed in the image acquisition device according to the present invention is embedded / attached to the underwater camera module to be submerged underwater attached to the ultrasonic transceiver and a plurality of cameras submerged underwater. The exchange of signals between these ultrasonic transceivers and camera modules and the digital image signal processing unit and the device control unit on the line (water) is performed by a cable connected by a cable connector. In the case of a power source for operating the apparatus according to the present invention, the signal processor, the display panel, the camera, the ultrasonic transceiver, and the lighting apparatus using a separate battery box as shown in FIG. It is supplied to the back.

EXAMPLES

1 and 2, the depth sensor uses the pressure sensor installed in the submerged ultrasonic transceiver and the underwater camera as an electrical signal. After conversion, it is converted into text through MCU and ADC and synchronized to each screen in real time and displayed on the display panel (LCD, organic EL, etc.). The positional information is displayed on the display panel in text and numerical values by the same means as the depth information on the display panel. The underwater camera module may be configured in various ways. For example, the case of having a plurality of lighting devices and a plurality of cameras at the same time, one camera to one lighting device, or a plurality of cameras or as many cameras as desired without attaching a lighting device The signal processing controller according to the present invention can process signals, and power and other control signals supplied for their operation are supplied to the ultrasonic transceiver and the camera module through a transmission cable. The video signals input from the cameras are divided and displayed on a display screen as a moving image by signal processing of a video signal processor having a plurality of channels. The video signal acquired by the ultrasonic transceiver generates an ultrasonic wave underwater and the ultrasonic wave receives the ultrasonic signal reflected back to the object inside the water and the ground underwater, and the analog video signal obtained from the ultrasonic receiver is very good. Because it is weak and has a lot of noise, it is a digital signal converter which amplifies it, removes the noise mixed in the signal, and converts it into a digital signal, and uses the converted digital signal to perform video signals such as fish, objects, and terrain in the water. And a display panel for displaying the digital image signal stored in the memory by processing the scan lines and storing the digital image signal stored in the memory in the digital image signal processing unit. The analog signal input from the ultrasonic transceiver and the underwater camera module is converted into a digital signal through a digital signal converter (A / D converter), and the processing of the converted digital video signal is all performed by a digital video signal processing program. In addition, a signal input from the ultrasonic transceiver and the underwater camera module may be selectively displayed on a display panel (LCD, organic EL, etc.) as needed and simultaneously displayed on the display panel. At this time, depth information, location information, and time information are displayed on the display panel in text. The depth sensor is installed in the image acquisition device according to the present invention is attached to the underwater camera module to be submerged in the underwater by the ultrasonic transceiver and a plurality of cameras are submerged underwater. The exchange of signals between these ultrasonic transceivers and camera modules and the digital image signal processing unit and the device control unit on the line (water) is performed by a cable connected by a cable connector.

The present invention uses a wide-range (300m wide) ultrasonic scan system (Side Scan Sonar) and a multi-directional camera to real-time video images of 360-degree azimuth in order to improve the overall efficiency of searching and recording underwater objects. By implementing an underwater video acquisition device with one underwater multi-directional CCTV, the ultrasonic sonar transmits an audio signal underwater and the ultrasonic wave is reflected from the object and received by the ultrasonic receiver to display the underwater object on the monitor in real time. Searching and observing at sea or inland with a unit consisting of a video signal processing control unit and a video signal control unit that observes and records underwater objects or terrain in real time using a plurality of cameras and a plurality of video signal processing channels. To maximize efficiency and to end all underwater observations at once. Therefore, there is an effect of providing an underwater image acquisition device that is economical and relatively small in volume. It also has programs that can record current depth information, location information (GPS) and time information together on the screen in real time and display underwater 3D topographical information. Searching, observing, and recording of underwater objects can be used to acquire images of objects and terrain in the water at one time by a single device. In addition, there is an effect of selectively applying a more efficient equipment according to the underwater state to acquire a clearer video signal of the underwater subject, or to perform a faster underwater exploration work by using both equipment at the same time.

Claims (4)

An apparatus for acquiring an image of an underwater subject, comprising an ultrasonic transceiver and a camera module simultaneously, A camera module to which a camera is attached to acquire an image signal of an underwater subject, An ultrasonic transceiver for acquiring an image signal of an underwater subject, Image signal selection means for selectively acquiring image signals received from the camera module and the ultrasonic transceiver; Means for converting the selected video signal into a digital video signal and displaying it on a display panel in scan lines or frame units; Position information acquisition means for setting as a target work on the water surface in association with GPS and indicating the current position and trajectory information of the ship; An apparatus for acquiring an underwater subject having a depth sensor configured to be embedded in the camera module or the ultrasonic transceiver and to transmit the depth of the spot where the camera or the ultrasonic transceiver is located on a ship in real time. The method according to claim 1, The camera module includes a plurality of cameras and an image acquisition device of an underwater subject, characterized in that composed of a plurality of cameras for observing the object in multiple directions. The method according to claim 1, Receiving unit of the ultrasonic transceiver is an image acquisition device of an underwater subject, characterized in that composed of a ceramic piezoelectric element. The method according to claim 1 or 2, The camera module further includes a plurality of cameras and an illumination device for illuminating a subject in the underwater underwater image acquisition apparatus for an underwater subject.