公开(公告)号：US20240112444A1

公开(公告)日：2024-04-04

申请号：US17936519

申请日：2022-09-29

Applicant: International Business Machines Corporation

Inventor： Michele Merler ,  Dhiraj Joshi ,  Apurv Gupta ,  Sebastien Gilbert ,  Shyama Prosad Chowdhury ,  Chidansh Amitkumar Bhatt ,  Nirmit V. Desai

IPC: G06V10/764 ,  G06V10/22 ,  G06V10/74 ,  G06V10/84 ,  G06V30/19

CPC classification number: G06V10/764 ,  G06V10/23 ,  G06V10/761 ,  G06V10/85 ,  G06V30/19173 ,  G06V2201/07

Abstract: Automated analog gauge reading is provided. The method comprises a computer system receiving input of an image and detecting at least one analog gauge in the image. The computer system corrects the orientation of the analog gauge in the image and detects scene text and tick labels on the analog gauge. The computer system determines a position of a pointer on the analog gauge relative to the scene text and outputs a gauge reading value based on an arithmetic progression of tick labels and angle of the pointer with respect to minimum and maximum values on the analog gauge.

公开(公告)号：US20240135486A1

公开(公告)日：2024-04-25

申请号：US18048975

申请日：2022-10-23

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Sebastien Gilbert ,  Michele Merler ,  Dhiraj Joshi ,  Apurv Gupta ,  Shyama Prosad Chowdhury ,  CHIDANSH AMITKUMAR BHATT ,  Nirmit V. Desai

IPC: G06T3/00 ,  G06T3/40

CPC classification number: G06T3/0006 ,  G06T3/4046

Abstract: Described are techniques for oblique image rectification. The techniques include receiving an original image depicting an oblique view of a circular object and pre-processing the original image into an edge image. The techniques further include generating, by a machine learning model based on the edge image, a heatmap including an ellipse formed by the oblique view of the circular object. The techniques further include computing ellipse parameters describing the ellipse of the heatmap. The techniques further include performing, using the ellipse parameters, an affine transformation on the original image to generate a rectified image, where the rectified image converts the ellipse to a circle.

公开(公告)号：US12249041B2

公开(公告)日：2025-03-11

申请号：US18048975

申请日：2022-10-24

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Sebastien Gilbert ,  Michele Merler ,  Dhiraj Joshi ,  Apurv Gupta ,  Shyama Prosad Chowdhury ,  Chidansh Amitkumar Bhatt ,  Nirmit V. Desai

IPC: G06T3/02 ,  G06T3/4046

Abstract: Described are techniques for oblique image rectification. The techniques include receiving an original image depicting an oblique view of a circular object and pre-processing the original image into an edge image. The techniques further include generating, by a machine learning model based on the edge image, a heatmap including an ellipse formed by the oblique view of the circular object. The techniques further include computing ellipse parameters describing the ellipse of the heatmap. The techniques further include performing, using the ellipse parameters, an affine transformation on the original image to generate a rectified image, where the rectified image converts the ellipse to a circle.

公开(公告)号：US20240233067A9

公开(公告)日：2024-07-11

申请号：US18048975

申请日：2022-10-24

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Sebastien Gilbert ,  Michele Merler ,  Dhiraj Joshi ,  Apurv Gupta ,  Shyama Prosad Chowdhury ,  CHIDANSH AMITKUMAR BHATT ,  Nirmit V. Desai

IPC: G06T3/00 ,  G06T3/40

CPC classification number: G06T3/0006 ,  G06T3/4046

Abstract: Described are techniques for oblique image rectification. The techniques include receiving an original image depicting an oblique view of a circular object and pre-processing the original image into an edge image. The techniques further include generating, by a machine learning model based on the edge image, a heatmap including an ellipse formed by the oblique view of the circular object. The techniques further include computing ellipse parameters describing the ellipse of the heatmap. The techniques further include performing, using the ellipse parameters, an affine transformation on the original image to generate a rectified image, where the rectified image converts the ellipse to a circle.