公开(公告)号：AU2003234188A1

公开(公告)日：2003-12-12

申请号：AU2003234188

申请日：2003-04-22

Applicant: ALCON INC

Inventor： GRAY GARY PAUL

IPC: H04N7/01 ,  H04N5/44 ,  H04N7/12 ,  H04N11/00 ,  H04N11/20

Abstract: Deinterlacing is applied to a composite video image that includes alternating even and odd rows of pixels. The even rows form a first image; the odd rows, a second image; these are recorded at different times, introducing a possibility of motion artifact. A first average horizontal intensity difference is computed between the first image and the second image. The first image is offset by one pixel in each horizontal direction to form a horizontally offset image, and another average horizontal intensity difference is computed. A minimum average intensity difference is determined from a comparison of the average horizontal intensity differences. The first image is shifted in a horizontal direction determined to achieve the minimum average horizontal intensity difference, and the horizontally shifted first image is combined with the second image to form an improved composite image. An analogous series of steps is carried out in a vertical direction.

公开(公告)号：AU780951B2

公开(公告)日：2005-04-28

申请号：AU5248101

申请日：2001-04-19

Applicant: ALCON INC

Inventor： CAMPIN JOHN ALFRED ,  GRAY GARY PAUL ,  SHEN QIPING

IPC: A61B3/10 ,  A61B3/15 ,  A61F9/007 ,  A61F9/008 ,  A61F9/01 ,  G06T1/00 ,  G06T7/60 ,  A61B3/00

Abstract: An orientation system for corrective eye surgery includes a camera for performing a first image mapping of a patient's eye using a predetermined eye feature and software for processing the first image map to determine an edge location of the feature. A second image mapping of the eye is performed with the patient in a different position. The second image map is processed to locate the predetermined eye feature. Correlation of the mappings is used to calculate an orientational change of the eye between the two positions. The data are used to calculate an adjustment to be applied to a corrective prescription for application by the surgical procedure.

公开(公告)号：AU780491B2

公开(公告)日：2005-03-24

申请号：AU5249201

申请日：2001-04-25

Applicant: ALCON INC

Inventor： CAMPIN JOHN ALFRED ,  GRAY GARY PAUL

IPC: A61B18/20 ,  A61B19/00 ,  A61F9/007 ,  A61F9/01 ,  A61F9/00

Abstract: A system for protecting a sector of tissue from exposure to surgically directed radiation includes a processor and an input device, a camera, and an output screen in electronic communication with the processor. A software resident on the processor receives camera data containing an image of a region of tissue, which includes at least a portion of a predetermined area desired to receive therapeutic radiation. The software also routes the image for display superimposes thereon first indicia indicative of the predetermined area. Data are received on a location of a sector of the tissue desired to be protected from the radiation and for superimposing on the displayed image second indicia indicative of the sector. In a specific embodiment the tissue is an eye and the predetermined area is at least a portion of the cornea.