Industrial Technology Research Institute

Kun-Hsien Lu

Shu-Hsin Chang

Yi-Yu Su

Yu-Hsien Hsiao

Ching-Chun Kao

Yao-Chin Yang

Wei-Cheng Sun

Chun-Yu Chuang

Shih-Yu Liu

The present disclosure provides a camera calibration method and a system thereof. The method includes setting up a camera in a space; establishing or selecting two line segments in the space, and obtaining an image of the space including the two line segments, and obtaining heights and image coordinates of upper and lower endpoints of the two line segments; calculating a focal length, a first rotation angle, a second rotation angle and a third element of a translation vector of the camera based on the information of the two line segments; calculating a third rotation angle of the camera based on a reference direction and the camera information obtained above; calculating a first element and a second element of the translation vector of the camera based on a reference point and the camera information obtained above.

Camera calibration method and camera calibration system

A method for detecting people entering and leaving a field is provided in an embodiment of the disclosure. The method includes the following. An event detection area corresponding to an entrance is set, and the event detection area includes an upper boundary, a lower boundary, and an internal area, and the lower boundary includes a left boundary, a right boundary, and a bottom boundary; a person image corresponding to a person in an image stream is detected and tracked; and whether the person passes through or does not pass through the entrance is determined according to a first detection result and a second detection result.

System, method and storage medium for detecting people entering and leaving a field

An image positioning method having following steps is provided. The steps include: obtaining world coordinates of two reference points and image coordinates of two projection points corresponding to the two reference points; calculating a plurality of coordinate transformation parameters relative to transformation between any image coordinates and any world coordinates corresponding to a camera according only to the world coordinates of the two reference points, the image coordinates of the two projection points, and world coordinates of the camera; obtaining an second image having an object image corresponding to an object through the camera; and positioning world coordinates of the object according to the coordinate transformation parameters.

Image positioning method and system thereof

The disclosure provides a load balancing system, a load balancing device and a topology management method. The topology management method includes configuring and maintaining a transmission progress value for each of edge servers; grouping the edge servers into server groups, wherein the edge servers of each of the server groups provide one of a plurality of video streams, and each of the edge servers is grouped into at least one server group among the server groups; selecting a first video stream from at least one video stream corresponding of a first edge server having bandwidth usage rate higher than a high load threshold; synchronizing video data of the first video stream to a second edge server; setting a transmission progress value of the second edge server as a transmission progress value of the first edge server; and adding the second edge server into the server group corresponding to the first video stream.

Load balancing system, load balancing device and topology management method

The disclosure provides a load balancing method, a load balancing system, a load balancing device and a topology reduction method. The load balancing method includes configuring a transmission progress value for each of the edge servers; grouping the edge servers into server groups, wherein each of the edge servers is grouped into at least one server group among the server groups; receiving a download request corresponding to a first video stream from a user device, wherein a first server group among the server groups provides the first video stream; and selecting one of the edge servers from the edge servers of the first server group as a first edge server to provide video data of the first video stream to the user device according to the transmission progress values of the edge servers of the first server group.

Load balancing method, load balancing system, load balancing device and topology reduction method

According to one exemplary embodiment, a parallel scheduling method for network data transmission is provided. This method generates a corresponding modulus condition set for each weight in a weight set, with each modulus condition of the modulus condition set having a modulus operation, and a divisor and a remainder for the modulus operation, uses a network node to transmit the modulus condition set corresponding to said each weight to a transmitting node corresponding to the weigh. Based on the modulus condition set, the transmitting node transmits a plurality of data chunks, and at least one receiving node receives the plurality of data chunks, wherein each data chunk corresponding to a sequence number, and the sequence number matches a corresponding modulus condition in the modulus condition set.

Growing community of inventors

Kaohsiung, Taiwan

Kun-Hsien Lu