KR101693259B1 - 3D modeling and 3D geometry production techniques using 2D image - Google Patents

Abstract

The present invention analyzes a 2D image transmitted through a portable terminal such as a PC or a mobile and analyzes the edited 2D image, applies the analyzed depth value to a 3D editing tool to form a 3D modeling, The present invention relates to a 3D modeling method using a 2D image for producing a 3D shape having a color and a technique for producing a 3D shape.

Description

BACKGROUND ART [0002] 3D modeling using a 2D image and a three-dimensional shape manufacturing technique

The present invention relates to 3D modeling using a 2D image and a three-dimensional shape production technique. More specifically, the present invention can analyze a 2D image, provide editing and depth values, And more particularly, to a 3D modeling method and a three-dimensional shape making method using a 2D image.

Conventional 3D printers have been developed for the purpose of prototyping products before they are commercialized in the enterprise. However, they have been developed in the early stage, which was confined to plastic materials, expanded to nylon and metal materials, and commercialized in various fields as well as industrial prototypes Respectively.

In general, 3D printers are divided into a stacked type (additive type or rapid prototyping type) which stacks up layers one by one according to the method of forming a three-dimensional form and a cutting type (computer numerically controlled piece type) that cuts large ones. For example, a person or an object may be the object.

The step of fabricating a stereoscopic shape is performed by modeling, printing, and finishing.

The modeling is a step of producing a 3D drawing, which is produced using a 3D CAD (computer aided design), a 3D modeling program, a 3D scanning device, or the like. Generally, as in the construction industry or automobile manufacturing factory, the 3D scanning device is used except for the place where the 3D design is performed from the beginning. The 3D scanning device is a machine which draws the shape of the actual object on the monitor in three dimensions, By taking three-dimensional data by scanning the whole object, or by taking light such as a laser light onto a thing and then receiving reflected light to obtain three-dimensional data, or synthesizing pictures taken from six views such as the upper and lower slopes So that three-dimensional data can be obtained. However, in the conventional scan method, it is troublesome to visit the place where the scan device is provided, and the quality of the scan data may be changed according to the performance of the scan device. For example, when a person is scanned, the hair portion may not be generated as the scanning data, and the correct 3D data can not be generated with such scanning data.

Therefore, the emergence of an invention that enables correct 3D data to be generated regardless of the performance of a scanning device is required.

Korean Patent Application Publication No. 10-2015-0046557 Korea Patent Office Registration No. 10-1495810

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and an object of the present invention is to provide a 3D modeling method using a 2D photograph received from a kakao talk, a message, The object of the present invention is to provide a 3D modeling method and a three-dimensional shape making technique using a 2D image that can create a three-dimensional shape of all objects using 2D photographs.

According to an embodiment of the present invention, there is provided an image processing method comprising: a 2D image correction step of correcting a shadow and a color of a 2D image; A 2D image analysis step of setting a depth value of the corrected image using a commercial image editing tool; A 3D modeling step of generating a 3D image by applying the values calculated in the 2D image analysis step to a 3D editing tool; And a product completing step of completing the product by matching the 3D image and the 2D image formed in the 3D modeling step.

In a preferred embodiment of the present invention, the 2D image analyzing step divides the corrected 2D image into regions and calculates depth values through shading.

In a preferred embodiment of the present invention, the 2D image analyzing step forms a displace-map according to shading that occurs in different regions.

According to a preferred embodiment of the present invention, the displace-map is configured such that black is set to 0 and white is set to 100, and black and white are divided into six levels.

In a preferred embodiment of the present invention, the 3D modeling generating step generates a 3D image that is formed only of a Z-axis value using a depth value.

As a preferred embodiment of the present invention, the 3D modeling generating step may restrict the pixel movements in the X and Y axes in addition to the Z-axis value, thereby maintaining the original shape.

In a preferred embodiment of the present invention, the product completing step is a step of matching the 2D image to the 3D formed image and restoring the same color as the original.

According to the present invention, the following effects can be achieved by this configuration.

In the 3D modeling and 3D modeling technique using a 2D image according to the present invention, a 3D modeling can be formed by analyzing and editing an image of a 2D photo transmitted using a PC or a mobile, Therefore, it is possible to overcome the spatial constraint for providing the scanning device, and it is not necessary to visit the photographing place provided with the scan device, thereby saving other required costs and time.

In addition, since the present invention utilizes a general 2D image instead of a scanning device, it is possible to form a three-dimensional shape of a bust, a half body, a whole body, and all objects, and it is possible to perform more precise and accurate work than a manual work using a conventional clay or clay. It is possible to achieve an effect in which the color can be directly expressed.

FIG. 1 is a block diagram schematically illustrating a 3D modeling and 3D modeling technique using a 2D image according to an embodiment of the present invention,
FIG. 2 is a view schematically showing an example of forming a displacement map using 3D modeling using a 2D image and a three-dimensional shape making technique according to an embodiment of the present invention,
FIG. 3 is a view schematically showing a method of constructing a level applied to the display map using 3D modeling using a 2D image and a three-dimensional shape producing technique according to an embodiment of the present invention,
4 is a view schematically showing a 3D image to which a Z value is applied using 3D modeling using a 2D image and a 3D shape making technique according to an embodiment of the present invention,
5 is a view schematically showing an example of detail rendering using a 3D editing tool in a 3D modeling and 3D modeling technique using a 2D image according to an embodiment of the present invention,
6 is a diagram schematically illustrating an example in which a product is completed by matching a 3D image and an original image generated in a 3D modeling and 3D modeling technique using a 2D image according to an embodiment of the present invention.

Hereinafter, a 3D modeling and a 3D shape making technique using a 2D image according to the present invention will be described in detail with reference to the accompanying drawings. It is to be noted that like elements in the drawings are represented by the same reference numerals as possible. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 1 is a schematic block diagram of a 3D modeling and 3D shape creation technique using a 2D image according to an embodiment of the present invention. FIG. 2 is a block diagram of a 3D modeling and a 3D shape creation using a 2D image according to an embodiment of the present invention. FIG. 3 is a schematic view illustrating an example of forming a displacement map using a 2D image and a 3D shape creation technique according to an embodiment of the present invention. FIG. 4 is a schematic view illustrating a 3D image having a Z value applied using a 3D modeling using a 2D image and a 3D shape making technique according to an embodiment of the present invention. FIG. FIG. 5 is a schematic diagram illustrating an example of detail rendering using a 3D editing tool in a 3D modeling and 3D modeling technique using a 2D image according to an embodiment of the present invention. FIG. 6 is a diagram illustrating an example of a completed product by matching the 3D image and the original image generated in the 3D modeling and 3D shape creation technique using the 2D image according to the embodiment of the present invention. It is an example.

The present invention requires facilities such as a 3D printer and an editing device to directly produce monuments desired by a plurality of customers in order to produce a 3D object, and as shown in FIG. 1, a 2D image correction step S100; 2D image analysis step S200; 3D modeling generation step S300; And a product completion step (S400).

The 2D image correction step S100 is a step of correcting the image of the object requested by the user. The user can use a terminal (PC, PDMA, smart phone, etc.) Message or e-mail. The image refers to an image formed in 2D such as a photograph or a picture. The received image is corrected to remove the shadow so that only the image necessary for the 3D shape production exists, or to correct the color represented by the blurred line or point so that the original image is not damaged.

The 2D image analysis step (S200) analyzes the image through the 2D image correction step (S100) using a commonly used image editing tool and calculates a depth value according to the analyzed image. The 2D image analysis step (S200) Set the depth value so that shading can be generated for each divided and divided area. For example, as shown in FIG. 2, in order to produce a full-length image, a dis- map-map is formed by creating shades by dividing into a face, a neck, an upper body, a lower body, and the like.

In the Displace-map, black is set to 0, and 100 is assigned to white, which can be divided into 6 levels, and a depth value (Depth-Rate) is designated according to the divided shades. Axis value of the 3D modeling generation step (S300) described later.

Accordingly, as shown in FIG. 3, the depth value (Depth-Rate) is a value obtained by giving a height value to the shadows calculated by the displacement map, , The area painted in white may correspond to a luminance value of 255, the maximum height of white may be limited to 100, and the gray (gray) gradation between black and white may be determined according to how the subject should be displayed As shown in FIG. 3, when the side of the bust of the human being is exemplified, the line formed around the ear represented by black is set to a height of 0 and a nose tip is set to a maximum height of 100 do.

The 3D modeling creation step S300 forms a 3D modeled image by applying a Displace-map and a Depth-Rate calculated in the 2D image analysis step S200 to the 3D editing tool Dimensional image by projecting a Z-axis value to which a depth value according to shading is applied to a displace-map.

In general, when working without a base in a 3D editing tool, it takes a lot of time to work by repeatedly pushing and pulling the surface formed of millions of polygons. Also, the original image applied to the surface may be distorted or the resolution of the person may be distorted However, in the present invention, a displacement map and a depth value are provided to the 3D editing tool to prevent the original image from being damaged and to shorten the working time.

In order to describe the details using the 3D editing tool, the movement of the pixels formed by the X and Y axes is restricted in addition to the Z axis value to which the depth value is applied due to the special instruction, So that the shape can be made.

The product completion step S400 is a step of completing the product by matching the 3D image formed in the 3D modeling step S300 and the original 2D image to restore the same color as the 2D image.

The matched image can be printed by a method selected from a stacking type (addition type or rapid prototyping method) and a cutting type (computer numerically controlled engraving method) in which a large lump is cut through a 3D printer.

The present invention analyzes a 2D image and calculates a Displace-map and a Depth-Rate and provides it to a 3D editing tool to form a 3D image file, so that a 3D image, a figure, a memorial plaque, a trophy, It is possible to make all shapes desired by customers such as bust, and match the original image with the 3D image so that the color of the original can be expressed as it is, so that the perfection of the product can be improved.

While the applicant has described various embodiments of the present invention, it is to be understood that such embodiments are merely one embodiment of the technical idea of the present invention, and that any changes or modifications as far as implementing the technical idea of the present invention are within the scope of the present invention Should be interpreted as belonging to.

S100: 2D image correction step
S200: 2D image analysis step
S300: 3D modeling creation step
S400: Product Completion Step

Claims (7)

A 2D image correcting step of correcting the 2D image within a range in which the original image is not corrupted by removing the shadow or correcting the color represented by the blurred line or point so that only the image necessary for the 3D shape production exists;
A 2D image analysis step of setting a depth value of the corrected image using a commercial image editing tool;
A 3D modeling step of generating a 3D image by applying the values calculated in the 2D image analysis step to a 3D editing tool;
And a product finishing step of matching the 3D image and the 2D image formed in the 3D modeling step and restoring the same color as the original to complete the product,
The 2D image analyzing step may include calculating a depth value through shading by dividing the corrected 2D image into regions, forming a displace-map according to different shades for each region, map is made up of 0 levels of black and 100 levels of white. The depth between black and white is divided into six levels. Depth-rate can be specified according to the divided level so that it can be provided as a Z-axis value ,
Wherein the 3D modeling generating step generates a 3D image that is only a Z-axis value using depth values and restricts pixel movements in X and Y axes in addition to a Z-axis value to maintain the original shape. Using 3D Modeling and 3D Shape Making Technique. delete delete delete delete delete delete

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