Monitoring handling of an object

Patent metadata

Field	Value
Publication number	US-11564643-B2
Application number	US-202016868261-A
Country	US
Kind code	B2
Filing date	May 6, 2020
Priority date	May 14, 2019
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

In order to reduce a radiation dose delivered to an object or an observer, a facility for monitoring handling of the object has an optical unit configured to direct ionizing radiation onto the object and also a filter element in order to attenuate a part of the ionizing radiation. An imaging unit may detect portions of the ionizing radiation passing through the object in order to create an image of the object. A view acquisition system may acquire a viewing movement, and a control unit is configured, during a first operating mode, to control a position of the filter element as a function of the viewing movement. The control unit is configured to identify a predefined sequence of viewing movements and, as a function thereof, to switch into a second operating mode. The position of the filter element is controlled during the second operating mode as a function of an image analysis.

First claim

The invention claimed is:

1. A facility for monitoring handling of an object, the facility comprising:
an optical unit configured to direct ionizing radiation onto the object;
a filter element configured to be arranged in a beam path of the ionizing radiation to attenuate a part of the ionizing radiation;
an imaging unit configured to detect portions of the ionizing radiation passing through the object in order to create an image of a part of the object;
a view acquisition system configured to acquire a viewing movement of an observer; and
a control unit configured, during a first operating mode, to control a position of the filter element as a function of the viewing movement,
wherein the control unit is configured to:
identify a predefined sequence of viewing movements of the observer as a function of the acquired viewing movement of the observer;
switch from the first operating mode into a second operating mode when the predefined sequence of viewing movements of the observer has been identified; and
during the second operating mode, control the position of the filter element as a function of an image analysis of the image.

2. The facility of claim 1 , wherein the control unit is configured to:
detect, as a function of the viewing movement, whether a direction of view of the observer lies within a predetermined view direction area; and
retain the first operating mode or to switch from the second operating mode into the first operating mode when the direction of view lies within the view direction area.

3. The facility of claim 1 , wherein, through the identification of the predefined sequence of viewing movements of the observer, the facility is configured to detect that a direction of view of the observer lies within a predetermined further view direction area.

4. The facility of claim 1 , wherein the control unit is configured to switch from the first operating mode into the second operating mode when the view acquisition system cannot acquire the viewing movement of the observer.

5. The facility of claim 1 , further comprising:
a processing unit configured to carry out an image analysis in order to determine a position of a region of interest,
wherein the control unit is configured to control the position of the filter element during the second operating mode as a function of the position of the region of interest.

6. The facility of claim 1 , wherein the control unit is configured to:
repeatedly acquire the viewing movement and to compare the repeatedly acquired viewing movement with the predefined sequence of viewing movements of the observer; and
identify the predefined sequence of viewing movements of the observer based on a result of the comparison.

7. The facility of claim 1 , wherein the control unit is configured to:
identify a predefined further sequence of viewing movements of the observer as a function of the viewing movement;
determine at least one status variable of the facility or a change in the at least one status variable; and
switch from the first operating mode into the second operating mode, depending on the at least one status variable or on the change in the at least one status variable, when the predefined further sequence of viewing movements of the observer has been identified.

8. A facility for monitoring handling of an object, the facility comprising:
an optical unit configured to direct ionizing radiation onto the object;
a filter element configured to be arranged in a beam path of the ionizing radiation to attenuate a part of the ionizing radiation;
an imaging unit configured to detect portions of the ionizing radiation passing through the object in order to create an image of a part of the object;
a view acquisition system configured to acquire a viewing movement of an observer; and
a control unit configured, during a first operating mode, to control a position of the filter element as a function of the viewing movement,
wherein the control unit is configured to:
identify a predefined sequence of viewing movements as a function of the acquired viewing movement;
switch from the first operating mode into a second operating mode when the predefined sequence of viewing movements has been identified; and
during the second operating mode, control a position of a priority region based on a model,
wherein the model has been trained as a function of control data that has been created during the first operating mode in order to control the position of the priority region as a function of the acquired viewing movement.

9. The facility of claim 8 , wherein the model is configured to be trained through:
a direction of the ionizing radiation onto the object by the optical unit;
an attenuation of the part of the ionizing radiation by the filter element in order to define a priority region;
a creation of the image of the part of the object by the imaging unit based on portions of the ionizing radiation passing through the object;
an acquisition of the viewing movement of the observer by the view acquisition system;
a determination of a target position by the control unit for the priority region as a function of the acquired viewing movement; and
a determination of a parameter set for the model by a processing unit based on a correlation of the image with the target position.

10. A training facility for a model for image analysis when monitoring handling of an object, the training facility comprising:
an optical unit configured to direct ionizing radiation onto the object;
a filter element configured to be arranged in a beam path of the ionizing radiation in order to attenuate a part of the ionizing radiation and thereby to define a priority region;
an imaging unit configured to detect portions of the ionizing radiation passing through the object in order to create an image of a part of the object;
a view acquisition system configured to acquire a viewing movement of an observer;
a control unit configured to determine a target position for the priority region as a function of the viewing movement; and
a processing unit configured to:
determine a parameter set for the model based on a correlation of the image with the target position;
determine a further target position for the priority region based on the model using the parameter set determined based on the image;
compare the further target position with the target position; and
determine a quality code for the parameter set defined based on a result of the comparison.

11. A method for training a model for image analysis when monitoring handling of an object, the method comprising:
directing, by an optical unit, ionizing radiation onto the object;
attenuating, by a filter element, a part of the ionizing radiation in order to define a priority region;
creating, by an imaging unit, an image of a part of the object based on portions of the ionizing radiation passing through the object;
acquiring, by a view acquisition system, a viewing movement of an observer;
determining, by a control unit, a target position for the priority region as a function of the viewing movement;
determining, by a processing unit, a parameter set for the model based on a correlation of the image with the target position;
determining, by the processing unit, a further target position for the priority region based on the model using the parameter set determined based on the image;
comparing, by the processing unit, the further target position with the target position; and
determining, by the processing unit, a quality code for the parameter set defined based on a result of the comparing.

12. A method for monitoring handling of an object, the method comprisi

Assignees

• Siemens Healthcare Gmbh

Inventors

• Nekovar Anton
• Sharifi Mohammad

Classifications

• A61B6/541

  involving acquisition triggered by a physiological signal · CPC title

• G06T2207/30041

  Eye; Retina; Ophthalmic · CPC title

• G06T1/0014

  Image feed-back for automatic industrial control, e.g. robot with camera (robots B25J19/023) · CPC title

• A61B6/12

  Arrangements for detecting or locating foreign bodies · CPC title

• G06T2207/30016

  Brain · CPC title