公开(公告)号：US11979655B2

公开(公告)日：2024-05-07

申请号：US17490595

申请日：2021-09-30

Applicant: GM Global Technology Operations LLC

Inventor： Kathleen Marie Schuetz ,  Andrew W. Averhart

IPC: H04N7/18 ,  B60R11/04 ,  G06T7/00 ,  H04N23/60 ,  B60R11/00

CPC classification number: H04N23/64 ,  B60R11/04 ,  G06T7/0002 ,  B60R2011/0026 ,  G06T2207/30168 ,  G06T2207/30252

Abstract: Method of detecting and overcoming degradation of image quality during a weather event and activation of windshield wipers. The method takes a high-contrast region of interest (ROI) of an image captured by a camera of a vehicle vision system, applies a Laplacian Operator that focuses on the pixel level in the ROI, and calculates a variance of the Laplacian. Images having an ROI below a predetermined variance threshold are classified or flagged as a low-quality image. Once a low-quality image is flagged, the camera settings can be readjusted in a feedback loop to compensate for the loss in quality of the captured image. This method may be stored as a software routine and implemented by a vision control module of the vision system.

公开(公告)号：US20240019720A1

公开(公告)日：2024-01-18

申请号：US17863894

申请日：2022-07-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Tzvi Philipp ,  Andrew W. Averhart ,  Yuri Paskover ,  Tomer Pe'er

IPC: G02F1/01 ,  H04N5/225 ,  G02F1/1335

CPC classification number: G02F1/0136 ,  H04N5/2254 ,  G02F1/133528 ,  B60R11/04

Abstract: A perception system for a motor vehicle includes a camera with a lens having a field of view and configured to focus incident light from the field of view. The field of view includes a road having a road surface. The perception system also includes an imaging sensor arranged in the camera. The imaging sensor has a photosensitive surface defined by an imaging surface area configured to capture the incident light focused from the field of view. A first portion of the imaging surface area is configured to capture an image of the road. The perception system further includes a first polarizer array arranged across the first portion of the imaging surface area and configured to reduce glare from the road surface.

公开(公告)号：US11874539B1

公开(公告)日：2024-01-16

申请号：US17863894

申请日：2022-07-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Tzvi Philipp ,  Andrew W. Averhart ,  Yuri Paskover ,  Tomer Pe'er

IPC: G02F1/01 ,  G02F1/1335 ,  H04N23/55 ,  B60R11/04

CPC classification number: G02F1/0136 ,  G02F1/133528 ,  H04N23/55 ,  B60R11/04

Abstract: A perception system for a motor vehicle includes a camera with a lens having a field of view and configured to focus incident light from the field of view. The field of view includes a road having a road surface. The perception system also includes an imaging sensor arranged in the camera. The imaging sensor has a photosensitive surface defined by an imaging surface area configured to capture the incident light focused from the field of view. A first portion of the imaging surface area is configured to capture an image of the road. The perception system further includes a first polarizer array arranged across the first portion of the imaging surface area and configured to reduce glare from the road surface.