Door Station Image Correction via External Server

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Solution Overview

Problem

Existing door communication systems struggle to produce high-quality images under challenging environmental conditions, such as backlight, darkness, or snowfall, due to limited hardware and software capabilities, which restrict advanced image processing techniques like chromatic aberration correction and contrast adjustments.

Innovation Solution

The method involves transmitting faulty images to an external image correction server for processing, where they are corrected using advanced algorithms, and the corrected images are then returned to the door communication system for display, thereby offloading the computing power and storage requirements from the door communication system itself.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If advanced image processing techniques are implemented in the door communication system, then image quality under challenging environmental conditions is improved, but device complexity and hardware requirements increase

Engineering Contradiction:
Improveimage qualityVSAvoidhardware and software complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent extracts the image processing functionality from the door communication system and relocates it to an external image correction server. The door station simply captures images and transmits them to the server, which performs advanced processing algorithms (chromatic aberration correction, contrast adjustment, sharpness enhancement) and returns corrected images. This separation reduces the complexity and hardware requirements of the door communication system while maintaining high image quality.

Inventive Principle:
Principle #2Taking out (Extraction)

2Speed

If image processing algorithms are run locally in the door communication system, then processing speed is improved, but the system requires more powerful hardware and software capabilities

Engineering Contradiction:
Improveprocessing speedVSAvoidhardware and software power requirements
Core Design Contradiction:
SpeedVSDevice complexity

Solution Approach 1:

The patent introduces an intermediary component - the image correction server - that handles the computationally intensive image processing tasks. The door station captures images and transmits them to the server, which performs advanced processing algorithms and returns corrected images. This intermediary approach allows fast processing without requiring the door communication system to have powerful hardware capabilities, as the server provides the necessary computational power.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of manufacture

If common door communication systems perform basic image processing, then ease of implementation is maintained, but advanced image correction capabilities are lost

Engineering Contradiction:
Improveease of implementationVSAvoidimage quality
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent segments the image processing functionality into two parts: basic image capture and transmission (handled by the simple door communication system) and advanced image correction (handled by the external server). The door station remains easy to implement with basic capabilities, while the server provides advanced correction algorithms. This segmentation allows the door communication system to maintain ease of implementation while achieving high image quality through the server's processing.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP3739863B1Method for operating a door communication system
Publication Date: 2022.02.16 GIRA GIERSIEPEN GMBH & CO KG
  • EP3739863B1 patent drawingFigure 1

AI summary

The invention relates to a method for operating a door communication system (1) comprising the steps: a. Generating a request to establish a visual communication link between a door station (2) and at least one apartment station (3) of the door communication system (1), wherein at least one image is captured with a camera (7) of the door station (2); b. Checking the at least one image captured by the door station (2) for the presence of at least one image defect, wherein an image exhibiting an image defect is identified as defective; characterized by c. Transmitting the image identified as defective to an image correction server (4) located outside the door communication system (1); d. Performing at least one image correction by the image correction server (4) on the at least one image identified as defective, whereby a corrected image is obtained; and e.Transfer of the corrected image from the image correction server (4) to a storage device (5) of the door communication system (1).