公开(公告)号：US20240397217A1

公开(公告)日：2024-11-28

申请号：US18669229

申请日：2024-05-20

Applicant: Apple Inc.

Inventor： Sheng LIN ,  D. Amnon Silverstein ,  David R. Pope

IPC: H04N25/46 ,  G06T5/70 ,  H04N9/64 ,  H04N23/67 ,  H04N23/84 ,  H04N25/445 ,  H04N25/68

Abstract: Embodiments relate to image signal processors (ISP) that include binner circuits that down-sample an input image. An input image may include a plurality of pixels. The output image of the binner circuit may include a reduced number of pixels. The binner circuit may include a plurality of different operation modes. In a bin mode, the binner circuit may blend a subset of input pixel values to generate an output pixel quad. In a skip mode, the binner circuit may select one of the input pixel values as the output pixel pixel. The selection may be performed randomly to avoid aliasing. In a luminance mode, the binner circuit may take a weighted average of a subset of pixel values having different colors. In a color value mode, the binner circuit may select one of the colors in a subset of pixel values as an output pixel value.

公开(公告)号：US20240169481A1

公开(公告)日：2024-05-23

申请号：US18429536

申请日：2024-02-01

Applicant: Apple Inc.

Inventor： Sarvesh SWAMI ,  David R. POPE ,  Sheng LIN ,  Amnon D. SILVERSTEIN

IPC: G06T3/4015 ,  G06T3/4007 ,  G06T5/20

CPC classification number: G06T3/4015 ,  G06T3/4007 ,  G06T5/20

Abstract: Embodiments ralte to a multi-mode demosaicing circuit able to receive and demosaic image data in a different raw image formats, such as Bayer raw image format and Quad Bayer raw image format. The multi-mode demosaicing circuit demosaics Quad Bayer image data by interpolating a green channel of the image data along each of a plurality of directions, generating a gradient of the image data along each of the plurality of directions, modifying the interpolated green channels based on respective gradients to generate full-resolution green channel image data, which is combined with red and blue image data to generate the demosaiced image data. Interpolation is performed for non-green pixels based on neighboring green pixels along a specified direction, modified by a residual value based upon valued of one or more nearby same-color pixels and a correlation between values of the same color pixels and neighboring green pixels.