Image Processing Failure Diagnosis via Pseudo Completion Signals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In image processing systems, intermittent operation of image processing sections complicates regular failure diagnosis within a predetermined period, making it difficult to ensure functional safety, especially in driving safety support systems that rely on continuous image processing for obstacle detection and vehicle control.
Innovation Solution
An image processing apparatus is designed with a failure diagnosis control section that permits failure diagnosis by utilizing idle states between frame processing, using a pseudo image processing end signal and image processing completion signals to determine when failure diagnosis can be executed without interfering with regular image processing, ensuring timely and reliable diagnosis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If failure diagnosis is performed only when image processing completion signals are received, then failure diagnosis can be executed based on actual processing completion, but regular failure diagnosis within a predetermined period cannot be ensured when image processing sections operate intermittently
Solution Approach 1:
The system generates a pseudo image processing end signal in advance at a predetermined time point when the image processing section is in an idle state, before actual image processing occurs. This preliminary action ensures that failure diagnosis can be scheduled and executed regularly within the predetermined period, rather than waiting for actual processing completion signals that may arrive intermittently.
2Loss of time
If failure diagnosis is performed continuously without considering idle states, then regular diagnosis timing can be maintained, but power consumption increases and unnecessary processing occurs
Solution Approach 1:
The system dynamically adjusts the failure diagnosis execution strategy by introducing a pseudo image processing end signal that is generated conditionally based on the idle state of the image processing section. This dynamic approach allows the system to perform failure diagnosis regularly only when the processing section is idle, avoiding continuous diagnosis that would waste energy, while still maintaining timing regularity when conditions permit.
Data Source
AI summary
An image processing apparatus of an embodiment is an image processing apparatus including a first image processing section configured to perform image processing for frames which are designated as processing target frames, a failure diagnosis processing section configured to perform failure diagnosis of the first image processing section at each frame period, and a failure diagnosis control section configured to control execution of the failure diagnosis processing section. The failure diagnosis control section includes a signal selecting section that gives notice of a failure diagnosis permission state which is a state where the first image processing section is capable of executing failure diagnosis. The signal selecting section outputs a failure diagnosis start permission signal at a time point of receiving a pseudo image processing completion signal from a failure diagnosis processing start timing generating section if the input frame is a processing non-target frame.