KR101195134B1 - Numerical map system offering omnidirectional incline image and offering method thereof - Google Patents

Abstract

PURPOSE: A digital map providing method for providing an omnidirectional incline image is provided to display an omnidirectional incline image about a corresponding spot by a panorama method if a user requests information about a specific spot of the digital map using a smart phone while the user moves. CONSTITUTION: A digital map system displays an ommidirectional incline image about a specific spot by a panorama method if a user requests information about the specific spot on a digital map using a smart phone(130) during movement. A digital map providing server(120) manufactures a digital map according to a preset scenario. An incline image is stored in an oblique image DB(110). The incline image DB stores an omnidirectional incline image about the spot and an ID related to the spot. [Reference numerals] (110) Oblique image DB; (120) Digital map providing server; (130) Smart phone

Description

NUMERICAL MAP SYSTEM OFFERING OMNIDIRECTIONAL INCLINE IMAGE AND OFFERING METHOD THEREOF}

The present invention relates to a method for providing a digital map, and more particularly, to a method for providing a digital map for providing an omnidirectional tilt image.

Aerial images for cartography are mainly captured by orthogonal projection techniques. Because of the nature of most 2D maps, the orthoimage is suitable for accurate representation of roads, terrain, etc., and it is also useful for correcting image distortion.

By the way, the orthographic projection technique is suitable for vertical aerial images, but not suitable for applying to aerial aerial images as it is. When the orthogonal projection is applied to the aerial tilt image, the terrain and the ground surface of the captured image are overly deformed. That is, since it is not an image of a shape viewed from an inclined direction when viewed from the air, there is a very unnatural feeling, and there is a problem in that it is not possible to recognize an actual main feature.

Since image drawing is performed over a large area, it is mainly based on images taken by aircraft or satellites.

Since it is impossible to cover all areas with just one shot, it is possible to subdivide the area, take several shots of aerial shots, and connect the captured images for detailed drawing.

However, in the process of synthesizing multiple images, each image has a resolution difference according to the change in the altitude of the aircraft, and various problems occur as if the photographing angle is shifted due to the change in orientation or posture of the aircraft. Above all, the problem arises that it is difficult to accurately determine the shooting location for the various subdivided areas. The aircraft calculates its current position using GPS. Since the aircraft is located at a high altitude rather than the ground, it is difficult to calculate the exact position. In particular, when using two GPS satellites, the position error becomes even worse.

As such, the image drawing work is scattered with various factors that lower the precision, and thus, various work for the preparation of the accurate map is required.

In particular, when producing digital maps, it is necessary to provide a variety of information in addition to the existence of simple terrain, roads, and structures, and there are no methods for providing accurate images and various images of various structures and tourist resources. .

Digital maps provide various images of famous tourist attractions, buildings, and specific structures.However, there are no methods to select and how to properly select a structure when producing such digital maps.

There is a need for a method of accurately recognizing, selecting, and photographing a specific point. In particular, such detail information requires an inclined image rather than an orthogonal image, and it is not easy to accurately and selectively photograph the inclined image.

That is, waterfalls, famous buildings, famous temples, etc., as well as tourists that are not easily captured in dense areas should be accurately captured and photographed inclined. There is a need for a method that allows an aircraft to accurately capture tilted images of many points at one time and capture tilted images at the most appropriate angle.

In the case of aerial shooting, if a shooting error occurs, it is necessary to go back and take pictures again and again, which may be a disadvantage in terms of cost and efficiency.

As discussed above, it is necessary to reduce errors in aerial photography and increase work efficiency in the process of producing digital maps.

On the other hand, in the conventional digital map production process, there is a problem that the characteristics of the image appearing in the aerial image is different depending on the environmental factors such as weather changes, shooting date, shooting time and aircraft altitude change. In this case, an error may occur when producing a digital map according to the difference in contrast or color shown in the aerial image. In order to prevent such an error, in the past, since the operator directly checks the contrast or color of numerous aerial images and converts them manually, it takes a lot of time and money.

Korea Patent Office Registered Patent Publication 10-1097898 Korea Patent Office Registered Patent Publication 10-1089361

Another object of the present invention is to provide a method of providing a digital map for providing an omnidirectional tilt image.

According to an aspect of the present invention, a numerical map system for providing an omnidirectional tilt image includes: an tilt image DB for storing an omnidirectional tilt image for a predetermined point and an ID associated with the predetermined point; A digital map providing server which creates and provides a digital map, and searches for an omnidirectional tilt image from the tilt image DB using an ID of the predetermined point when a tilt image is requested to the predetermined point on the numerical map; The digital map providing server receives a digital map and displays the digital map, and requests a tilt image for the predetermined point, and includes a smart terminal for receiving and displaying the omnidirectional tilt image, the digital map providing server is mounted on the aircraft Sequentially generating and outputting input image data by digitally capturing images from at least one photographing apparatus, selecting and outputting at least one reference image data according to predetermined offset information, and Converted image data by generating a first histogram by detecting a gray scale value or a luminance value, and converting the contrast and color of the sequentially input input data data into the contrast and color of the reference image data using the generated first histogram information. Create them, and the sides Generate and output image data and use the same to produce a digital map, and sequentially detect grayscale values or luminance values of the sequentially input image data and output them in at least one frame unit, and output grayscale values or luminance of the input image data. The second histogram information is generated for each input image data according to the value, and the gray level value or the luminance value of the input image data is converted to each frame unit so that the generated second histogram information is the same as the first histogram information. It may be configured to generate and output image data.

Here, the omnidirectional tilted image may be configured to be photographed while light emission of the surface-mounted camera is stopped while the omnidirectional tilted image is captured.

The smart terminal may be a smart phone or a tablet PC.

According to another aspect of the present invention, a method for providing a digital map providing an omnidirectional tilt image includes the steps of requesting, receiving, and displaying a digital map from a smart terminal to a digital map providing server; Requesting an omnidirectional tilt image of the point, the numerical map providing server searching for an omnidirectional tilt image in the tilted image DB using the ID associated with the requested point, and the numerical map providing server finding the found omnidirectional tilt And providing an image to the smart terminal, and displaying the omnidirectional tilt image by the smart terminal, wherein the numerical map sequentially converts captured images from at least one imaging device mounted on an aircraft. To generate and output input video data sequentially Select and output at least one reference image data according to the offset information, generate a first histogram by detecting a gray value or a luminance value of the selected reference image data, and sequentially input the first histogram using the generated first histogram information. Converted image data is generated by converting contrast and color of the input image data into contrast and color of the reference image data, and generates and outputs the converted image data to be used for digital map production, but the input images are sequentially input. The gray level value or the luminance value of the data is sequentially detected and output in at least one frame unit, the second histogram information is generated for each input image data according to the gray level value or the luminance value of the input image data, and the generated second histogram. The information is the first histogram information By converting the grayscale value or the luminance value of the input image data to be the same to generate and output the converted image data every frame unit, the omnidirectional tilt image is the altitude of the aircraft measured by the surface light emitter attached to the predetermined point And transmitting the ID of the surface light emitter to the aircraft, wherein the aircraft captures an omnidirectional tilt image in a direction of receiving the altitude and ID at a predetermined altitude, and links the photographed omnidirectional tilt image and the ID to the tilt image DB. Can be configured to be stored.

Here, the smart terminal may be a smart phone or a tablet PC.

According to the numerical map providing method for providing the omnidirectional tilt image as described above, when the user requests information about a specific point on the numerical map by using a smart phone while moving, the omnidirectional tilt image of the corresponding point is displayed in a panorama format. Can give

Accordingly, the user may use more information in real time for a specific building, a tourist destination, a natural landscape, etc., for sightseeing and other purposes.

On the other hand, by performing the digital map production operation according to a predetermined scenario, there is an effect that can replace the manual work of the operator, such as various contrast and color contrast and proceed more efficiently.

1 is a block diagram of a digital map system for providing an omnidirectional tilt image according to an embodiment of the present invention.
2 is a conceptual diagram of a tilted image photographing for the point to which the light emitter for surface treatment according to the present invention is attached.
3 is a flowchart illustrating a method for providing a digital map for providing an omnidirectional tilt image according to an embodiment of the present invention.

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.

It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Like reference numerals are used for like elements in describing each drawing.

The terms first, second, A, B, etc. may be used to describe various elements, but the elements should not be 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 first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be.

On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements 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 present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art.

Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a digital map system for providing an omnidirectional tilt image according to an embodiment of the present invention.

Referring to FIG. 1, a numerical map system (hereinafter, referred to as a 'numeric map system') 100 that provides an omnidirectional tilt image according to an embodiment of the present invention may include a tilt image DB 110 and a digital map providing server ( 120 and the smart terminal 130.

When the user requests information about a specific point on the numerical map by using the smart phone 130 while the user moves, the digital map system 100 is configured to display an omnidirectional tilt image of the corresponding point in a panoramic format.

In this case, the digital map providing server 120 performs a digital map production operation according to a predetermined scenario, thereby replacing various manual operations such as contrast and color contrast, and proceeding more efficiently.

At this time, the inclined image is stored in the inclined image DB 110, the inclined image is characterized in that it is produced using a light emitter for pavement.

Accordingly, the user may use more information in real time for a specific building, a tourist destination, a natural landscape, etc., for sightseeing and other purposes.

Hereinafter, the detailed configuration will be described.

The tilt image DB 110 is configured to store an omnidirectional tilt image for a predetermined point and an ID associated with the predetermined point.

At this time, the omnidirectional tilt image transmits the aircraft's altitude and the ID of the slit light emitter measured by the slit light emitter attached to the predetermined point to the aircraft, and the aircraft captures the omni directional tilt image in the receiving direction of the altitude and ID at the predetermined altitude. Is produced.

The captured omnidirectional tilt image and the ID are linked and stored in the tilt image DB 110. The production of the omnidirectional tilt image will be described in more detail with reference to FIG. 2.

2 is a conceptual diagram of a tilted image photographing for the point to which the light emitter for surface treatment according to the present invention is attached.

Referring to FIG. 2, the aircraft 20 is configured to photograph an inclined image toward the surface light emitter 10 provided at a predetermined point such as a building or a tourist spot.

In the past, many specific points on the numerical map were difficult to search or recognize in the aircraft 20. However, the present invention is characterized in that the recognition of the inclination direction using the array antenna of the aircraft 20 and recognizes the specific points through the ID of the light emitting for light emitter 110. The process of producing an omnidirectional tilt image of the present invention will be described in more detail.

First, the surface light emitter 10 may be configured to include a light emitting module (not shown), an altitude measurement module (not shown), and a first RF module (not shown).

The light emitting module may be configured to emit light by being attached to a point of important buildings, tourist attractions, natural objects, etc. on the numerical map. It is configured to visually identify or mark a specific point.

The altitude survey module may be configured to survey the altitude of the aircraft 20 by a triangulation scheme. At this time, the altitude measurement module measures the inclination angle of the ground and the aircraft 20. This angle of inclination is to guide so as to shoot at the most optimal angle for each point when shooting the inclination image in the aircraft 20.

The first RF module may be configured to transmit the altitude surveyed at the ID and altitude survey module. Here, ID is a configuration for allowing the aircraft 20 to recognize each point as the ID of the light emitting device 10 for the surface.

Next, the aircraft 20 includes an array antenna (not shown), a second RF module (not shown), a signal direction determination module (not shown), an ID determination module (not shown), an altitude determination module (not shown), and a tilted image. It may be configured to include a photographing module (not shown).

The array antenna is an antenna that receives a signal from the light emitter 10 for the surface.

The array antenna can adjust the transmission / reception direction of the signal in a specific direction due to its characteristics, so that the reception direction of the signal can be known.

The second RF module may be configured to receive in real time the ID and altitude via the array antenna.

The signal direction determination module may be configured to determine the direction of receiving the ID and the altitude by using the array antenna. Thus, the direction of the predetermined point can be accurately recognized.

The ID determining module may be configured to determine a point at which the light emitter 10 for staging is attached using the received ID.

The altitude determination module may be configured to determine whether the received altitude is within a predetermined predetermined altitude range. That is, it is determined whether the predetermined altitude is predetermined for each predetermined point such as a building or a tourist spot. This is to allow the inclination image to be taken at the optimal inclination angle.

The tilt image capturing module may be configured to photograph the tilt image in the direction determined by the signal direction determining module when the altitude determining module determines that the previously received altitude is within a predetermined altitude range.

In this case, the tilt image capturing module may photograph the tilt image while pivoting the spot in the omnidirectional direction. Thus, the tilt image capturing module is preferably configured in a gimbal structure to maintain the shooting direction for the point when the attitude of the aircraft 20 changes.

In addition, the tilt image capturing module may be configured to automatically control the gimbal structure according to the signal direction of the signal direction determination module to maintain a constant shooting direction.

On the other hand, the omnidirectional inclination image is preferably configured to be photographed while the emission of the pavement detector 110 while the omnidirectional inclination image is taken.

Referring back to FIG. 1, the numerical map providing server 120 provides a numerical map to the smart terminal 130, but when the tilt image of the predetermined point is requested on the numerical map, the numerical map providing server 120 tilts using the ID of the predetermined point. The image DB 110 may be configured to search for and provide an omnidirectional tilt image.

In this case, the digital map providing server 120 sequentially generates and outputs input image data by digitalizing photographed images from at least one photographing apparatus mounted on the aircraft 10, and at least according to predetermined offset information. Selecting and outputting one reference image data, generating a first histogram by detecting the gray level value or the luminance value of the previously selected reference image data, and using the generated first histogram information, the contrast of the input image data sequentially inputted. And convert the color into the contrast and the color of the reference image data to generate converted image data, generate and output the converted image data, and use the digital map to produce the converted image data. To detect at least one frame Generating second histogram information for each input image data according to the gray level value or the luminance value of the input image data, and the gray level value or the luminance value of the input image data so that the generated second histogram information is the same as the first histogram information. The conversion may be configured to generate and output converted image data every frame.

Next, the smart terminal 130 receives and displays a digital map from the digital map providing server 120, but requests a tilt image for the predetermined point to the digital map providing server 120 and receives and displays the omnidirectional tilt image. It can be configured to.

In this case, the smart terminal 130 may be a smart phone or a tablet PC.

3 is a flowchart illustrating a method for providing a digital map for providing an omnidirectional tilt image according to an embodiment of the present invention.

Referring to FIG. 3, first, the smart terminal 130 requests, receives, and displays a digital map from the digital map providing server 120 (S110).

In this case, the digital map sequentially generates and outputs input image data by digitally capturing images from at least one photographing apparatus mounted on the aircraft 10, and generates at least one reference based on predetermined offset information. Selecting and outputting image data, generating a first histogram by detecting the gray level value or the luminance value of the previously selected reference image data, and using the generated first histogram information, the contrast and color of the sequentially input image data are determined. Converted image data is generated by converting the reference image data into contrast and color, and the converted image data is generated and output to be used for digital map production, while sequentially detecting grayscale values or luminance values of input image data. Output at least one frame unit, The second histogram information is generated for each input image data according to the gray level value or the luminance value of the input image data, and the gray level value or the luminance value of the input image data is made to be equal to the first histogram information. The conversion may be configured to generate and output converted image data every frame.

In this case, the smart terminal 130 may be a smart phone or a tablet PC.

Next, the smart terminal 130 requests the omnidirectional tilt image of the predetermined point selected by the user (S120).

In this case, the omnidirectional tilt image transmits the altitude of the aircraft 20 and the ID of the slit light emitter 10 measured by the slit light emitter 10 attached to a predetermined point to the aircraft 20, and the aircraft 20 It may be configured to take an omnidirectional tilt image in a direction of receiving an altitude and an ID at a predetermined altitude, and link the photographed omnidirectional tilt image and the ID to store the tilted image DB 110.

Next, the digital map providing server 120 searches for the omnidirectional tilt image from the tilt image DB 110 using the ID associated with the previously requested point (S130).

Next, the digital map providing server 120 provides the omnidirectional tilt image retrieved above to the smart terminal 130 (S140).

Next, the smart terminal 130 displays the omnidirectional tilt image (S150).

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the following claims. There will be.

Claims (5)

delete delete delete Requesting, receiving, and displaying the digital map from the smart terminal to the digital map providing server;
Requesting an omnidirectional tilt image of a predetermined point selected by a user in the smart terminal;
Searching, by the digital map providing server, the omnidirectional tilt image in the tilt image DB using an ID associated with the requested point;
Providing, by the digital map providing server, the searched omnidirectional tilt image to the smart terminal;
Displaying the omnidirectional tilt image by the smart terminal;
The numerical map,
Sequentially generating and outputting input image data by sequentially digitalizing photographed images from at least one photographing apparatus mounted on an aircraft, selecting and outputting at least one reference image data according to predetermined offset information, and selecting the selected image data. Generates a first histogram by detecting a gray level value or a luminance value of reference image data, and converts the contrast and color of the sequentially input input image data into the contrast and color of the reference image data using the generated first histogram information. Thereby generating converted image data, generating and outputting the converted image data, and using the same to produce a digital map, and sequentially detecting grayscale values or luminance values of the sequentially input image data and outputting them in units of at least one frame. The input image The second histogram information is generated for each input image data according to the gray level value or the luminance value of the data, and the gray level value or the luminance value of the input image data is converted so that the generated second histogram information is the same as the first histogram information. Thereby generating and outputting converted image data every frame unit.
The omnidirectional tilt image,
The altitude of the aircraft measured by the surface light emitter attached to the predetermined point and the ID of the surface light emitter are transmitted to the aircraft, and the aircraft captures and photographs an omnidirectional tilt image in the direction of receiving the altitude and ID at a predetermined altitude. And providing the omnidirectional tilt image by storing the omnidirectional tilt image and the ID in the tilt image DB. The method of claim 4, wherein the smart terminal,
Digital map providing method for providing an omnidirectional tilt image, characterized in that the smart phone or tablet PC.

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