23 Sep 2016
Two Concurrent CSI Cameras on the Open-Q™ 410 Development Kit
Why Two Cameras on the Open-Q™ 410?
Two cameras are critical for products such as robotics with stereo vision (two angles of the same view enabling depth and shape detection), and 360 degree views in IoT security cameras. The big challenge with connecting two cameras to the SnapDragon™ 410, is that the 410 contains a single Image Signal Processor (ISP). This blog unveils Intrinsyc’s Open-Q 410 supporting simultaneous dual camera capture, even though there is a single ISP on the 410 processor.
The Snapdragon™ System-on-Chip that powers the Open-Q™ 410 development kit is quite amazing: From the processor specifications available here, you can see it has very compelling capabilities, including quad-core 64-bit ARM Cortex A53 CPUs, onboard GPU, and many additional capabilities.
Intrinsyc’s Open‐Q™ 410 Embedded Development Kit is a versatile, easy‐to‐use exposed board platform providing the ideal starting point for creating the next generation embedded and IoT devices. The platform consists of Intrinsyc’s Open‐Q™ 410 System on Module, a carrier board exposing all the available IO, and a range of accessories to fast track your product development. The Open-Q™ 410 System on Module (SOM) is especially suited for mobile and IoT applications, having:
- compact form-factor
- advanced image processing, including OpenCV and Hexagon v5 DSP framework
- very low power suspend (<15mW) for battery-powered applications
- flexible wireless connectivity including 802.11n Wi-Fi and Bluetooth 4.1 (BLE, Low Energy)
- access to a broad range of Qualcomm® IoT connectivity solutions including AllPlay™ and AllSeen/AllJoyn
One very powerful subsystem includes the ISP capable of supporting up to 13MP cameras. Intrinsyc’s Open-Q 410 development kit brings out two MIPI-CSI camera ports allowing you to connect two cameras to the platform, which some products support by using the ISP in an alternating fashion. Dual camera products such as industrial robotics with stereo images which must be synchronized for accurate image processing, or stereoscopic drones with terrain mapping, however, are greatly improved by using MIPI-CSI connected cameras concurrently. In this blog, we demonstrate the use of both Open-Q™ 410 MIPI-CSI camera ports concurrently: one via the ISP and one via the Raw Data Interface (RDI) path, allowing simultaneous dual camera operation. This capability allows for many possibilities to process the two resulting images in RAM. As examples:
- two cameras pointing in the same direction, similar to many dual/stereo-cameras on popular phones today
- camera views in multiple completely different directions, for example in an IoT web-based security camera application
The following diagram represents the configuration in this demonstration:
The following link is a video that demonstrates this feature in operation:
The demonstration shows the Intrinsyc Open-Q™ 410 dev kit running Android 5.1.1 with 2 concurrent cameras operating and previewing video:
- Camera 1: 1080p @ 30 FPS YUV preview video
- Camera 2: VGA @ 30 FPS 10-bit Bayer preview video
- HDMI 720p Output
This demonstration showcases the use of two cameras simultaneously on the Open-Q™ 410 SOM. This challenging operation is possible despite the presence of a single image signal processor (ISP) on board the Snapdragon™ 410 processor. Additional resolutions/framerates are available.
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