“Seeing the Invisible: Unveiling Hidden Details through Advanced Image Acquisition Techniques,” a Presentation from Qualitas Technologies

For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/10/seeing-the-invisible-unveiling-hidden-details-through-advanced-image-acquisition-techniques-a-presentation-from-qualitas-technologies/

Raghava Kashyapa, CEO of Qualitas Technologies, presents the “Seeing the Invisible: Unveiling Hidden Details through Advanced Image Acquisition Techniques” tutorial at the May 2024 Embedded Vision Summit.

In this presentation, Kashyapa explores how advanced image acquisition techniques reveal previously unseen information, improving the ability of algorithms to provide valuable insights. He introduces various techniques, including high-resolution optics, filters, high dynamic range imaging and multispectral imaging.

Kashyapa explains how these techniques work and shares recommendations on how system developers can best utilize them to improve image quality and boost the performance of innovative machine vision applications. You’ll learn and explore how to make the invisible visible in your projects.

1. Seeing the Invisible
Unveiling Hidden Details through Advanced
Image Acquisition Techniques
Raghava Kashyapa
CEO
QualitasTechnologies Inc

2. The Cost of Correction
2© 2024 Qualitas Technologies Inc
Capturing images with suboptimal equipment.
Relying on software correction -time-consuming
and resource-intensive.
Trying to enhance a poorly shot photo in
Photoshop—significant effort with limited results.

3. Two Concepts we’re going to cover
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Optical
Aperture
•(Basic)
Multispectral
Imaging
•(Advanced)

4. Lens Aperture
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The Quest
for Clarity

5. The Surge of High-Megapixel Cameras
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6. 6© 2024 Qualitas Technologies Inc
The fine print: 0.56㎛pixels, the
smallest pixels in the industry, in a
1/1.4” optical format.
1

7. The Resolution-Sensitivity Trade-off
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Source: Princeton Instruments

8. Aperture: Improving your focus
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Diffraction

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Diffraction

11. Basics of Lens and Diffraction
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12. Diffraction Pattern: Airy Disc
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13. Effect of Aperture size on Image ‘sharpness’
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14. Diffraction Effect when disk size > pixel size
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DoF(Depth of Focus)?

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DoF(Depth of Field/Focus)?

17. Definition
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Source: https://photographylife.com/

18. Circle of Confusion
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19. Aperture and Effect of DoF
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20. 20© 2024 Qualitas Technologies Inc
Use an aperture to ensure Airy
disk size AND CoC is smaller than
the pixel size

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Concept 2: Multispectral Imaging
The Spectrum Beyond Sight

22. Expanding Vision: Beyond RGB
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23. The Multidimensional Image
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Regular Image
•3 Page Book (RGB)
Multispectral Image
•100s of pages!

24. Spectral Cube
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25. Seeing the Unseen: Material Identification
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26. Multispectral vs Hyperspectral Imaging
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27. Spot the Difference: Almonds and Shells
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RGB, multispectral (28 bands), and hyperspectral (224 bands) images of almonds and shells (green is almond
and blue is shell).

28. Transforming Industries with Spectral Insights
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RECYCLING AND WASTE MANAGEMENT FOOD QUALITY AND SAFETY OIL AND MINERAL EXPLORATION
COLOR AND SURFACE CHARACTERIZATION PHARMACEUTICS AND MEDICAL AGRICULTURE AND VEGETATION

29. The Unseen Awaits: Recap
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Optical Resolution: The critical role of aperture in balancing resolution
and depth of field
Multispectral Imaging: Leveraging the power of capturing data beyond
the visible spectrum to uncover hidden details and improve analysis

30. •Hyperspectral Imaging
•Specim.com
•Lens Diffraction
•fstoppers.com
•Cambridge In Color
Resources
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31. 31© 2024 Qualitas Technologies Inc
Q & A
Seeing the Invisible

32. Choosing optimal optical resolution
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33. Line Pair / mm
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34. Aperture
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