Complex-Object Visual Inspection via Multiple Lighting Configurations

04/20/2020
by   Maya Aghaei, et al.
5

The design of an automatic visual inspection system is usually performed in two stages. While the first stage consists in selecting the most suitable hardware setup for highlighting most effectively the defects on the surface to be inspected, the second stage concerns the development of algorithmic solutions to exploit the potentials offered by the collected data. In this paper, first, we present a novel illumination setup embedding four illumination configurations to resemble diffused, dark-field, and front lighting techniques. Second, we analyze the contributions brought by deploying the proposed setup in training phase only - mimicking the scenario in which an already developed visual inspection system cannot be modified on the customer site - and in evaluation phase. Along with an exhaustive set of experiments, in this paper, we demonstrate the suitability of the proposed setup for effective illumination of complex-objects, defined as manufactured items with variable surface characteristics that cannot be determined a priori. Moreover, we discuss the importance of multiple light configurations availability during training and their natural boosting effect which, without the need to modify the system design in evaluation phase, lead to improvements in the overall system performance.

READ FULL TEXT

page 1

page 3

page 7

page 8

research
05/16/2019

Uneven illumination surface defects inspection based on convolutional neural network

Surface defect inspection based on machine vision is often affected by u...
research
05/29/2023

Factored-NeuS: Reconstructing Surfaces, Illumination, and Materials of Possibly Glossy Objects

We develop a method that recovers the surface, materials, and illuminati...
research
02/06/2017

Detailed Surface Geometry and Albedo Recovery from RGB-D Video Under Natural Illumination

In this paper we present a novel approach for depth map enhancement from...
research
06/27/2012

Deep Lambertian Networks

Visual perception is a challenging problem in part due to illumination v...
research
12/02/2020

MirrorVLC: Optimal Mirror Placement for Multi-Element VLC Networks

Visible Light Communication (VLC) is a rapidly growing technology which ...
research
09/06/2023

LightNeuS: Neural Surface Reconstruction in Endoscopy using Illumination Decline

We propose a new approach to 3D reconstruction from sequences of images ...
research
05/02/2019

Single Image Portrait Relighting

Lighting plays a central role in conveying the essence and depth of the ...

Please sign up or login with your details

Forgot password? Click here to reset