公开(公告)号：US20130022258A1

公开(公告)日：2013-01-24

申请号：US13541820

申请日：2012-07-05

Applicant: Ho Jun LEE ,  Jin Ki KIM

Inventor： Ho Jun LEE ,  Jin Ki KIM

IPC: G06K9/40

CPC classification number: G06T5/002 ,  G06T2207/10116 ,  G06T2207/30004 ,  Y10S128/922

Abstract: An X-ray imaging apparatus and a method of updating a pixel map correct a bad pixel of an X-ray transmission image. An X-ray transmission image is generated by detecting an X-ray penetrating an object, and it is determined whether a difference between a value of each one of the pixels forming the X-ray transmission image and a value of a nearby pixel adjacent to the each one of the pixels is equal to or greater than a reference value. A pixel having a value representing a difference equal to or greater than the reference value is determined as a candidate for a bad pixel. A message is displayed which requests a selection of whether to determine if the candidate is a bad pixel. The pixel map is updated by reflecting the determined bad pixel on the pixel map.

Abstract translation: X射线成像装置和更新像素图的方法校正X射线透射图像的不良像素。 通过检测穿透物体的X射线来生成X射线透射图像，并且确定形成X射线透射图像的每个像素的值和与其相邻的附近像素的值之间的差异 像素中的每一个等于或大于参考值。 具有表示等于或大于参考值的差的值的像素被确定为坏像素的候选。 显示一个消息，其请求选择是否确定候选者是否是不良像素。 通过在像素图上反映确定的不良像素来更新像素图。

公开(公告)号：US20200142781A1

公开(公告)日：2020-05-07

申请号：US16613414

申请日：2018-08-09

Applicant: Ho Jun LEE

Inventor： Ho Jun LEE

IPC: G06F11/14

Abstract: A real time file alteration sensing-based automatic backup device includes: a backup target selection unit selecting one or more backup targets that are accessible over a network and are subjected to backup; a content alteration sensing unit sensing in real time whether contents of the one or more backup targets are altered or scanning all the backup targets for sensing at particular-time intervals; a backup data generation unit generating, when the alteration of the content of the backup target is sensed, backup data containing information required for recovery of the sensed backup target; and a backup data storage unit storing the generated backup data.