Image Acquiring Device Integrating Video and Spectral Imaging
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Solution Overview
Problem
Conventional three-dimensional measuring devices primarily capture positional data of objects, lacking the ability to acquire detailed properties or conditions, such as agricultural product growth conditions or mineral substance types, which limits decision-making and method selection in applications like agriculture and civil engineering.
Innovation Solution
An image acquiring device and system that combines a first camera for video images with a second camera for optical spectral imaging, using an image pickup control device to extract feature points, perform image matching, and synthesize optical spectral images with three-dimensional data, enabling the acquisition of four-dimensional models with both positional and spectral information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional three-dimensional measuring devices are used, then positional data of objects can be acquired, but detailed properties and conditions of objects cannot be obtained
Solution Approach 1:
The patent combines a first camera for acquiring video images and a second camera for acquiring optical spectral images into a single integrated system. Both cameras are mounted on the same supporting structure (such as a drone or aircraft) and their optical axes are aligned, allowing simultaneous acquisition of both positional and spectral data from the same viewpoint. This merging approach eliminates the need for separate measurement systems while comprehensively capturing object information.
Solution Approach 2:
The patent creates a multi-functional measurement system that can simultaneously perform three-dimensional positioning and optical spectral analysis. The first camera provides standard visual imaging for position identification, while the second camera captures spectral information across multiple wavelengths. Together, they enable a single device to serve multiple measurement purposes, from topography mapping to material composition analysis.
2Measurement precision
If optical spectral images are acquired without image matching, then spectral data can be obtained, but positioning accuracy and image quality deteriorate due to relative movement
Solution Approach 1:
The patent performs preliminary feature point extraction from video images and uses these features to establish correspondence relationships between sequential frames. By pre-identifying stable feature points and establishing their temporal relationships, the system prepares the necessary positioning information before spectral image synthesis, enabling faster and more accurate alignment of spectral data with positional information.
Solution Approach 2:
The patent uses video images from the first camera as a reference copy to guide the alignment and synthesis of spectral images from the second camera. The feature points extracted from the video sequence serve as a template for positioning, allowing the spectral images to be accurately registered to the corresponding spatial locations without requiring complex direct processing of the spectral data itself.
3Measurement precision
If feature points are extracted and tracked through video images, then image matching accuracy improves, but processing complexity increases
Solution Approach 1:
The patent extracts only the essential feature points from video images that are necessary for positioning and matching, rather than processing all image data. By selectively identifying and tracking key feature points that remain stable across frames, the system obtains sufficient information for accurate image alignment while discarding redundant data, thus reducing processing complexity while maintaining precision.
Data Source
AI summary
An image acquiring device comprises a first camera 14 for acquiring video images, consisting of frame images continuous in time series, a second camera 15 being in a known relation with the first camera and used for acquiring two or more optical spectral images of an object to be measured, and an image pickup control device 21, and in the image acquiring device, the image pickup control device is configured to extract two or more feature points from one of the frame images, to sequentially specify the feature points in the frame images continuous in time series, to perform image matching between the frame images regarding the frame images corresponding to the two or more optical spectral images based on the feature points, and to synthesize the two or more optical spectral images according to the condition obtained by the image matching.