Korea Electronics Technology Institute

Hwa Seon Shin

Byeong Ho Choi

Je Woo Kim

Hye In Lee

Sung Hwan Chun

Sung Hun Park

Choong Sang Cho

Yong Hwan Kim

Ji Min Jang

Ji Ho Park

Jae Gon Kim

Young Han Lee

Euy Doc Jang

Min Seok Park

Byung Tak Lee

Joo Hyung Kang

Sang Heon Lee

Jae-Gon Kim

Euee Seon Jang

Yo Sung Ho

Hyun Gyu Kim

Doo San Baek

Sin Wook Lee

Jin Su Myung

Dong Il Park

Jin Min Jang

Chung Ku Lee

Byung-Tak Lee

Provided is a method for modifying a design on the basis of an additive cross-section outline for 3D printing of an additive manufacturing method. The method for modifying a design on the basis of an additive cross-section outline according to an embodiment of the present invention comprises the steps of: slicing a 3D model into a plurality of 2D layers; calculating a difference region between a first layer and a second layer that is a lower layer adjacent to the first layer; calculating a modified outline that minimizes a region required for support by reducing the outline of the difference region; and merging the modified outline and the outline of the second layer. Accordingly, a design can be modified with fewer calculation processes compared to the prior art, models can be modified for additive manufacturing without additional design knowledge, and since the design has been modified to minimize the region required for support, the amount of support can be reduced, thereby increasing material or printing time efficiency, and strengthening a design structure.

Method for modifying design on basis of additive cross-section outline for 3D printing

Provided is a 3D printing slicing method for solving a quantization error problem. A 3D model slicing method according to an embodiment of the present invention comprises: receiving, as input, data of a 3D model to be three-dimensionally printed; calculating the height of the input 3D model; revising the height of the 3D model on the basis of a result of the calculation; and slicing the 3D model having the revised height. Accordingly, the present invention can easily and reliably solve a slicing quantization error problem even without changing the lamination thickness of a 3D printer.

3D printing slicing method for solving quantization error problem

Provided is a method for creating a 2D slicing polyline based support structure for 3D printing. A method for creating a support structure according to an embodiment of die present invention comprises: slicing a 3D model into a plurality of 2D layers; comparing the 2D layers to calculate a support position for each of the 2D layers; and creating supports at the calculated positions. As a result, the supports can be created at precise and meaningful positions, a stable output is possible, and additional slicing work is not necessary on the created supports, whereby improvement of speed can be expected.

Method for creating 2D slicing polyline based support structure for 3D printing

Provided is a nozzle clogging defect compensating method for compensating for a nozzle clogging defect appearing in a binder jetting stack manufacturing means. The nozzle clogging defect compensating method according to an embodiment of the present invention comprises the steps of: determining a defect occurrence region when a clogging defect of a nozzle used in the binder jetting stack manufacturing means occurs; determining whether compensation for the detect occurrence region is possible; when the compensation is possible, generating defect information and reflecting the defect information in an output code; setting a defect compensation region on the basis of the defect information; determining a defect compensation type of the defect compensation region; and reflecting a result of the determining in the output code. Accordingly, a replacement time and a replacement cost of an output head where the nozzle clogging defect has occurred can be saved, thereby reducing the unit production cost of a binder jetting type stack manufacturing output.

Nozzle clogging defect compensating method for binder jetting stack manufacturing means

Provided are a method and a system for solving a tolerance problem which may occur in a slicing quantization (staircase effect) process of 3D printing which slices a 3D model and laminates layers one by one. According to an embodiment of the present disclosure, a 3D model slicing method includes the steps of: receiving, by a 3D model slicing system, an input of data of a 3D model to 3D print; examining, by the 3D model slicing system, a dimension of a layer thickness of the inputted 3D model; correcting, by the 3D model slicing system, a size of a layer for slicing, based on a result of the examining; and slicing, by the 3D model slicing system, the corrected 3D model. Accordingly, by preserving a dimension within a layer thickness, a problem that a concavo-convex portion is lost in a slicing quantization process of 3D printing according to a slicing position within a layer thickness, and a tolerance occurs is solved.

3D printing slicing method for solving tolerance problem

Provided is a method for generating a hollow structure of a 3D model on the basis of a 2D laminated cross-sectional outline to reduce the amount of using a material or the weight of a printed matter during laminating and manufacturing. The method for generating a hollow structure based on a 2D laminated cross-sectional outline, according to an embodiment of the present invention, comprises the steps of: slicing the 3D model; generating a hollow structure outline on the basis of the result of the slicing; detecting an overhang area between adjacent hollow structure outlines; recalculating the hollow structure outline according to the result of detecting the overhang area; and generating a hollow structure mesh on the basis of the recalculated hollow structure outline. Accordingly, because 2D laminated cross-sectional data is used, a hollow structure can be generated without separate data processing, thereby reducing a calculation burden. In addition, because the hollow structure is processed so that an overhang area is not generated when generating the hollow structure, a support is not needed therein, thereby making post-processing easy.

Method for generating hollow structure based on 2D laminated cross-sectional outline for 3D printing

A method for producing a support structure of a 3D model for 3D printing is provided. A method for producing a support according to an embodiment of the present invention comprises the steps of: dividing a surface constituting a 3D model into multiple surface patches; classifying respective divided surface patches according to geometric characteristics; and producing supports corresponding to the classified characteristics with regard to respective surface patches. Accordingly, during metal laminate manufacturing, the output stability may be improved while reducing the support producing process time. In addition, the surfaces may be expressed by different colors according to the result of geometric characteristic classification, and the supports may also be expressed by different colors according to the type, thereby playing the role of guide lines such that the user can recognize the shape of the surfaces and the type of supports to be installed on the corresponding surfaces. Moreover, the size of a support tip is determined in view of the thickness of the area in which a support is to be produced, thereby preventing the problem of output quality degradation which would otherwise occur because the support cannot move upwards through an output part.

Method for producing 3D mesh surface characteristic-based support for laminate manufacturing

Provided is a method for monitoring 3D printing equipped with a 3D printing slicer and a recursive loop structure. A 3D printing method according to an embodiment of the present invention sets up a slicing environment for 3D printing of a 3D model, generates a mechanical code by performing slicing according to the setup environment, monitors the status of the 3D printing according to the generated mechanical code, and, depending on the monitoring result, determines whether or not to re-perform the setup and subsequent steps. Accordingly, by semi- or fully automating the 3D printing engineering process, the time and effort for engineering performance involving human participation are reduced, and the human resource is concentrated on a more important area, such that the effects of enhancing the 3D printing output quality and assuring the quality can be expected.

Method for monitoring 3D printing equipped with 3D printing slicer and recursive loop structure

Provided herein is a robust region segmentation method and a system using the same, the method including receiving setting of an image in an input image; calculating representative values for each of an internal portion and an external portion of the region; calculating a cost by substituting the representative values and a pixel value of the image in a cost function, and updating the region based on the calculated cost, wherein the cost function includes a term in which a difference between the updated pixel value and an original pixel value is reflected, thereby enabling an accurate region segmentation even in ambiguous images that are complicated and where division of regions is unclear.

Robust region segmentation method and system using the same

Provided herein is a topological derivatives (TDs)-based image segmentation method and system using heterogeneous image features data. The image segmentation method according to an embodiment of the present disclosure involves calculating TDs having each of the heterogeneous image features data as an input value, and segmenting an image into a plurality of regions using the calculated TDs. Accordingly, performance may be improved, and robustness against noise may be further improved.

Topological derivative-based image segmentation method and system with heterogeneous image features

The present invention relates to a method for transmitting and receiving program configuration information for a scalable ultra high definition (UHD) video service under the hybrid transmission environment, and to a method and apparatus for effectively transmitting scalar layer information, and more particularly, the present invention relates to a scheme for inserting group information for the scalable layer of a base layer and an enhancement layer, which form a scalable UHD video, and transmission channel information into a program map table (PMT) or a package configuration table (PCT), and for transmitting same, and to a scalable layer information format for transmitting layer information with a smaller number of bits as possible when a packet header includes scalable layer information.

Method for transmitting and receiving program configuration information for scalable ultra high definition video service in hybrid transmission environment, and method and apparatus for effectively transmitting scalar layer information

The present invention relates to a method for making 3D stereo digital broadcast service compatible in an MPEG-2-TS format which is used for transmitting and receiving digital TV. To this end, suggested is a method for transmitting detailed information which supports both TS-level multiplexing and ES-level multiplexing when left and right compressed bitstreams are multiplexed, when service compatibility is enabled.

Method for service compatibility-type transmitting in digital broadcast

The present invention relates to an input/output system for an ultra high definition image, and more specifically, to an input/output system for an ultra high definition image that may receive an ultra high definition image signal from an external device, process the signal in real time, and output the processed ultra high definition image signal. For this purpose, a system configured to convert data having various resolutions into UHD data of the present invention includes a content input/output device configured to provide data received from a data providing device to an editing device and provide the data received from the editing device to a content reproducing device, and an editing device configured to convert the data received from the content input/output device into UHD data and provide the result to the content input/output device.

Input/output system for editing and playing ultra-high definition image

The present invention relates to a multimedia-data-processing method which enables a media graph to always be constructed in a 'connection without negotiation' manner, on the basis of an already known media graph construction, and thus provides a media framework in which procedures for connecting components are minimized, thereby improving the performance of a system and satisfying the requests of an OS platform builder and a media application developer. The multimedia-data-processing method of the present invention is performed by a multimedia framework, and comprises: (a) a step of receiving component information required for the construction of the media graph and component connection information from a media application; and (b) a step of ensuring that the media graph is constructed by the content received in step (a), and that the media graph waits for a rendering command, thereby eliminating the necessity of permitting the media application to check the construction of the media graph.

Multimedia-data-processing method

A method for separating audio sources and an audio system using the same are provided. The method introduces the concept of a residual signal to separate a mixed audio signal into audio sources, and separates an audio signal corresponding to at least two of the audio sources as a residual signal and processes the audio signal separately. Therefore, audio separation performance can be improved. In addition, the method re-separates a separated residual signal and adds the separated residual signals to corresponding audio sources. Therefore, audio sources can be separated more safely.

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Seongnam-si, South Korea

Hwa Seon Shin