公开(公告)号：US12242917B2

公开(公告)日：2025-03-04

申请号：US18584223

申请日：2024-02-22

Applicant: SICK AG

Inventor： Hannes Ruf

IPC: G06K7/10 ,  G06T3/40 ,  G06T7/194

Abstract: A camera based code reader for reading an optical code on an object in a relative movement to the code reader has a linear image sensor to record a respective image line and a control and evaluation unit having at least one first pre-processing unit and a further processing unit. The first pre-processing unit is connected to the image sensor and is configured to read image line by image line in the course of the relative movement, to rescale a respective image line with a zoom factor z in a pre-processing, and then to forward it to the further processing unit. The further processing unit is configured to read the optical code from the image lines. The image sensor has a plurality of linear arrangements of light reception elements. Some of the light reception elements are sensitive to white light and some are respectively sensitive to only one color.

公开(公告)号：US12182973B2

公开(公告)日：2024-12-31

申请号：US17724690

申请日：2022-04-20

Applicant: SICK AG

Inventor： Romain Müller ,  Hannes Ruf

IPC: G06T5/70 ,  G06V10/30 ,  G06V10/75

Abstract: A camera includes an image sensor having a first recording channel of a first sensitivity for recording first image data including first pixels and a second recording channel of a second sensitivity lower than the first sensitivity for recording second image data including second pixels. The first pixels and second pixels are associated with one another by capturing a same object area. A control and evaluation unit processing the image data is configured to suppress noise effects in the second image data using a noise suppression filter that assigns a new value to a respective considered second pixel based on second pixels in a neighborhood of the considered second pixel. The noise suppression filter takes the second pixels in the neighborhood into account with a weighting that depends on how similar first pixels associated with the second pixels are to the associated first pixel of the respective considered second pixel.