Archives for April 2025
Sony FE 50-150mm f2 GM review
ICCP 2024 Keynote on Event Cameras
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In this keynote held at the 2024 International Conference on Computational Photography, Prof. Davide Scaramuzza from the University of Zurich presents a visionary keynote on event cameras, which are bio-inspired vision sensors that outperform conventional cameras with ultra-low latency, high dynamic range, and minimal power consumption. He dives into the motivation behind event-based cameras, explains how these sensors work, and explores their mathematical modeling and processing frameworks. He highlights cutting-edge applications across computer vision, robotics, autonomous vehicles, virtual reality, and mobile devices while also addressing the open challenges and future directions shaping this exciting field.
00:00 - Why event cameras matter to robotics and computer vision
07:24 - Bandwidth-latency tradeoff
08:24 - Working principle of the event camera
10:50 - Who sells event cameras
12:27 - Relation between event cameras and the biological eye
13:19 - Mathematical model of the event camera
15:35 - Image reconstruction from events
18:32 - A simple optical-flow algorithm
20:20 - How to process events in general
21:28 - 1st order approximation of the event generation model
23:56 - Application 1: Event-based feature tracking
25:03 - Application 2: Ultimate SLAM
26:30 - Application 3: Autonomous navigation in low light
27:38 - Application 4: Keeping drones fly when a rotor fails
31:06 - Contrast maximization for event cameras
34:14 - Application 1: Video stabilization
35:16 - Application 2: Motion segmentation
36:32 - Application 3: Dodging dynamic objects
38:57 - Application 4: Catching dynamic objects
39:41 - Application 5: High-speed inspection at Boeing and Strata
41:33 - Combining events and RGB cameras and how to apply deep learning
45:18 - Application 1: Slow-motion video
48:34 - Application 2: Video deblurring
49:45 - Application 3: Advanced Driving Assistant Systems
56:34 - History and future of event cameras
58:42 - Reading material and Q&A
Sony releases SPAD-based depth sensor
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From PetaPixel: https://petapixel.com/2025/04/15/sony-unveils-the-worlds-smallest-and-lightest-lidar-depth-sensor/
Sony announced the AS-DT1, the world’s smallest and lightest miniature precision LiDAR depth sensor.
Measuring a mere 29 by 29 by 31 millimeters (1.14 by 1.14 by 1.22 inches) excluding protrusions, the Sony AS-DT1 LiDAR Depth Sensor relies upon sophisticated miniaturization and optical lens technologies from Sony’s machine vision industrial cameras to accurately measure distance and range. The device utilizes “Direct Time of Flight” (dToF) LiDAR technology and features a Sony Single Photon Avalanche Diode (SPAD) image sensor.
From the official Sony webpage: https://pro.sony/ue_US/products/lidar/as-dt1
- 1.14 (W) x 1.14 (H) x 1.22 in (D)
- 50 g (1.1 oz)
- Utilizes dToF LiDAR technology
- Single Photon Avalanche Diode (SPAD) sensor
- Range distance of 40 m (131 ft) indoor, 20 m (65.6 ft) outdoor
- Lightweight aluminum alloy housing structure
- 2 USB-C ports
- Connector for external power, UART interface and trigger
- HFoV 30° or more
- Maximum measurement range at 15 fps, 50 percent reflectivity, center: Indoor: 131.23 ft and Outdoor: 65.62 ft
- Measurement accuracy at 10 m: Indoor/Outdoor: ±0.2 in
- Distance resolution: 0.98 in
- Frame rate: 30 fps
- 15 fps @ Maximum ranging distance mode
- Number of ranging points 576（24 x 24）
- Laser wavelength 940 nm
- Dimensions 1.14 (W) x 1.14 (H) x 1.22 in (D) (excluding protrusions)
- Weight 1.1 oz or less
Conference List – October 2025
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ASNT Annual Conference - 6-9 October 2025 - Orlando, Florida, USA - Website
Scientific Detector Workshop 6-10 October 2025 - Canberra, Australia - Website
AutoSens Europe - 7-9 October 2025 - Barcelona, Spain - Website
SPIE/COS Photonics Asia - 12-14 October 2025 - Beijing, China - Website
BioPhotonics Conference - 14-16 October 2025 - Online - Website
IEEE Sensors Conference - 19-22 October 2025 - Vancouver, British Columbia, Canada - Website
Optica Laser Congress and Exhibition - 19-23 October 2025 - Prague, Czech Republic - Website
OPTO Taiwan - 22-24 October 2025 - Taipei, Taiwan - Website
Image Sensors Asia - 30-31 October 2025 - Seoul, South Korea - WebsiteIf you know about additional local conferences, please add them as comments.
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