Patents by Inventor Christopher Chinho Chang

Christopher Chinho Chang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10904458
    Abstract: The present invention relates to an error correction unit for a time slice image. The present invention comprises: a stand having a length corresponding to the height of an object and standing upright; and a plurality of marker members, installed on the stand, for indicating a plurality of reference positions for setting an offset reference value, and providing the same shape in all directions. The present invention can readily set the offset reference value through the plurality of reference positions.
    Type: Grant
    Filed: September 5, 2016
    Date of Patent: January 26, 2021
    Inventor: Christopher Chinho Chang
  • Patent number: 10778908
    Abstract: A method for correcting an image of a multi-camera system by using a multi-sphere correction device is disclosed. According to the present invention, the method for correcting an image of a multi-camera system by using a correction unit and a multi-sphere correction device having two or more spheres, which are vertically arranged on a support at certain intervals, comprises: (a) a correction variable acquisition step of determining, by the correction unit, a correction variable value for a geometric error of each camera by using the multi-sphere correction device; and (b) an image correction step of correcting an image obtained by photographing an actual subject by using the correction variable acquired in step (a), and outputting the corrected image, thereby enabling a more accurate image to be captured since a geometric error of each camera is corrected.
    Type: Grant
    Filed: September 5, 2016
    Date of Patent: September 15, 2020
    Inventor: Christopher Chinho Chang
  • Publication number: 20180249088
    Abstract: A method for correcting an image of a multi-camera system by using a multi-sphere correction device is disclosed. According to the present invention, the method for correcting an image of a multi-camera system by using a correction unit and a multi-sphere correction device having two or more spheres, which are vertically arranged on a support at certain intervals, comprises: (a) a correction variable acquisition step of determining, by the correction unit, a correction variable value for a geometric error of each camera by using the multi-sphere correction device; and (b) an image correction step of correcting an image obtained by photographing an actual subject by using the correction variable acquired in step (a), and outputting the corrected image, thereby enabling a more accurate image to be captured since a geometric error of each camera is corrected.
    Type: Application
    Filed: September 5, 2016
    Publication date: August 30, 2018
    Applicant: 3DIGIVIEW ASIA CO., LTD.
    Inventor: Christopher Chinho Chang
  • Publication number: 20180241950
    Abstract: The present invention relates to an error correction unit for a time slice image. The present invention comprises: a stand having a length corresponding to the height of an object and standing upright; and a plurality of marker members, installed on the stand, for indicating a plurality of reference positions for setting an offset reference value, and providing the same shape in all directions. The present invention can readily set the offset reference value through the plurality of reference positions.
    Type: Application
    Filed: September 5, 2016
    Publication date: August 23, 2018
    Applicant: 3DIGIVIEW ASIA CO., LTD.
    Inventor: Christopher Chinho Chang