Object Capture Actuator for Blur-Free 3D Reconstruction
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Solution Overview
Problem
Existing object reconstruction devices using image sensors around a sphere face issues with image blurring due to object motion and potential damage from high impact speeds after capture, as they rely on rapid shutter speeds and large aperture settings, which limit the size of objects that can be captured and may result in damage upon reception.
Innovation Solution
A device with actuable holders and impulsion means that position the object at zero speed or near zero at the image sensors' focal point, using a parabolic trajectory to minimize contact speed and prevent damage, while ensuring the object is captured within the sensors' visual and depth of field, employing a control unit to coordinate the movement of holders and image capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the object falls through the capture area without support to avoid occlusion, then complete object surface is accessible for imaging, but the object moves at high speed causing image blurring
Solution Approach 1:
The actuator launches the object upward before it enters the capture area, so that the object reaches its apex (zero velocity point) exactly when passing through the capture area. This preliminary acceleration ensures the object is stationary relative to the sensors during image capture, eliminating motion blur while maintaining complete surface accessibility.
Solution Approach 2:
The system transitions from a static support structure to a dynamic actuator-based launch system. The actuator provides controlled upward motion to counteract gravity, creating a dynamic equilibrium where the object's velocity is zero at the capture point, thereby resolving the contradiction between motion-free imaging and complete surface exposure.
2Measurement precision
If high shutter speed and large aperture are used to freeze motion, then image blurring is reduced, but the object size that can be captured is limited
Solution Approach 1:
By launching the object upward beforehand, the system ensures zero velocity at the capture moment, eliminating the need for high shutter speeds. This allows the use of slower shutter speeds with larger aperture settings, thereby increasing depth of field and enabling capture of larger objects without compromising image sharpness.
3Device complexity
If the object falls freely through the capture area, then no support structure is needed, but the object gains high speed causing impact damage upon reception
Solution Approach 1:
Instead of allowing the object to fall downward under gravity (conventional approach), the system inverts the motion by launching the object upward. The object rises, reaches its apex at the capture area with zero velocity, and then falls back down. This inversion ensures that the object's velocity is zero during capture and minimizes impact speed at reception, eliminating the need for complex support structures while preventing impact damage.
Solution Approach 2:
The system converts the harmful effect of gravitational acceleration into a beneficial launch mechanism. The actuator uses controlled acceleration to launch the object upward, and gravity itself becomes the force that brings the object back to the capture area at zero velocity, thereby eliminating impact damage without requiring complex deceleration mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables clear, non-blurred image capture of the object's shape without occlusion, maintaining object integrity by controlling the object's speed and trajectory to match the sensors' focus and field of view, allowing for precise reconstruction of the object's volume without damage.
Implementation Method 1
the object is positioned at the point of image capture at speed either zero or very close to zero to improve the resolution of each image without blurring due to motion
Implementation Method 2
an actuator used as launcher and configured so that the object is positioned at the point of image capture
Implementation Method 3
Image sensors capture a plurality of images that are carried to a shape reconstruction system from said plurality of images corresponding to different views of the object
Implementation Method 4
the object is positioned at the point of image capture at speed either zero or very close to zero to improve the resolution of each image
Implementation Method 5
a shape reconstruction system from said plurality of images corresponding to different views of the object
Data Source
AI summary
The present invention is a device for the complete acquisition of the shape of an object by means of a plurality of image sensors arranged around a space for image capture. Image sensors capture a plurality of images that are carried to a reconstruction system formed from said plurality of images corresponding to different views of the object. Document EP2511653 discloses a system where the object falls through the trap area so that there is no type of fastener or support which hides some part of the object. The present invention is a device for the acquisition and reconstruction of objects characterized by the use of an actuator serving as launcher and configured so that the object is positioned at the point of capture of images at either zero or very close to zero speed to improve the resolution of each image without blurring due to movement, even with relatively long exposure times. Additionally, the actuator is configured so that the fall of the object is such that it prevents damage by the impact effect.