Image processing algorithm

Patent metadata

Field	Value
Publication number	US-10430680-B2
Application number	US-201715702828-A
Country	US
Kind code	B2
Filing date	Sep 13, 2017
Priority date	Sep 15, 2016
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

A method is claimed for allocating processor/computing times of a processor or of a computing unit for a vehicle system of a vehicle. The vehicle system is in particular a driver assistance system. The vehicle system has at least two functions, in particular two functions of the driver assistance system, to which processor/computing times are allocated as a function of a signal that represents a state of the vehicle.

First claim

What is claimed is:

1. A method for allocating processor/computing times of a processor or of a computing unit for a driver assistance system of a vehicle, comprising:
allocating processor/computing times to at least two functions of the driver assistance system as a function of a signal representing a state of the vehicle, wherein each function has assigned to it a control loop such that prior to the functions being executed each of the respective control loops requests a processor/computing time for the associated function.

2. The method as recited in claim 1 , wherein a priority is assigned to each function, and the control loops request the respective processor/computing times for the associated functions in a sequence of the priority of the functions.

3. The method as recited in claim 2 , wherein the associated priorities are assigned to the functions as a function of the signal representing the vehicle state.

4. The method as recited in claim 1 , wherein the processor/computing times allocated to the functions are adapted as a function of a ratio of tasks given to the function to tasks processed by the function in the allocated processor/computing time.

5. The method as recited in claim 1 , wherein the processor/computing times allocated to the functions are adapted as a function of at least one of a difference and a ratio of the processor/computing time allocated to the function and the processor/computing time actually required by the function for the processing of tasks given to the function.

6. The method as recited in claim 1 , wherein at least one of the functions is for object recognition, the object recognition for recognizing vehicles or pedestrians or traffic signs.

7. The method as recited in claim 1 , wherein the vehicle state is one of: a speed, a steering angle, an acceleration, or a setting of an operating element, the operating element including a gas pedal or brake pedal.

8. The method as recited in claim 1 , wherein the allocation of the processor/computing times takes place as a function of environmental parameters, the environmental parameters including a brightness.

9. The method as recited in claim 1 , further comprising:
determining a cumulative runtime limit for performance of all the functions; and
after a first of the control loops with a priority higher than a second of the control loops requests a respective processor/computing time for the associated function, and before the second control loop requests a respective processor/computer time for the associated function, determining a portion of the cumulative runtime limit that remains unallocated.

10. A computing unit for allocating processor/computing times of a processor or of a computing unit for a driver assistance system of a vehicle, the computing unit designed to:
allocate processor/computing times to at least two functions of the driver assistance system as a function of a signal representing a state of the vehicle, wherein each function has assigned to it a control loop such that prior to the functions being executed each of the respective control loops requests a processor/computing time for the associated function.

11. The computing unit as recited in claim 10 , wherein the computing unit is a regulator for an electrical machine, set up, through a corresponding integrated circuit and/or through a computer program stored on a memory, to perform the allocation.

12. The computing unit as recited in claim 10 , wherein the computing unit is designed to:
determine a cumulative runtime limit for performance of all the functions; and
after a first of the control loops with a priority higher than a second of the control loops requests a respective processor/computing time for the associated function, and before the second control loop requests a respective processor/computer time for the associated function, determine a portion of the cumulative runtime limit that remains unallocated.

Assignees

• Bosch Gmbh Robert

Inventors

• Weimer Florian
• Birk Matthias
• El-Din Omar Alaa
• Brueggert Steffen
• Rentschler Tobias

Classifications

• G06V10/96

  Management of image or video recognition tasks · CPC title

• G06V20/56 Primary

  exterior to a vehicle by using sensors mounted on the vehicle · CPC title

• B60W2555/20

  Ambient conditions, e.g. wind or rain · CPC title

• B60W2556/50

  of positioning data, e.g. GPS [Global Positioning System] data · CPC title

• B60W2050/065

  by reducing the computational load on the digital processor of the control computer · CPC title