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K1 Pro 摄像头接口说明

Processor MIPI CSI2介绍​

MIPI CSI-2 最初于2005年推出，为移动设备所使用的标准化相机接口规格，全名为MIPI Camera Serial Interface 2。MIPI CSI-2提供高带宽、低耗电与低电磁干扰的功能，因其易用性且支持高性能应用，包含 1080p、4K、8K 或更高的视频以及高解析度摄像，现在已经成为应用最为广泛的嵌入式摄像头和成像的接口。

详细介绍参考： MIPI CSI-2 Specifications

1.1 MIPI CSI2控制器​

K1 Pro的RK3576应用程序处理器支持5个CSI-2接口：

  • 4 ports support 2 D-PHY v1.2 data-lane with 2.5Gbps/lane These 4 ports may be bound as 2 ports with 4 data-lane per port
  • 1 port supports 4 D-PHY data-lane or 3 C-PHY trios D-PHY is v2.0 which lane speed is 4.5Gbps C-PHY is v1.1 which trio speed is 2.5Gsps
  • Each port supports 4 virtual channels

1.2 ISP处理器​

K1 Pro处理器推出了新一代1600万像素的ISP。它实现了许多算法加速器，如HDR, 3A, CAC, 3DNR, 2DNR,Sharpening, Dehaze, Enhance, Debayer, Small Angle Lens-Distortion Correction等，主要特性： ISP V3.9

  • Support video mode and picture mode
  • One channel ISP, 16M pixels
  • VICAP/DMA input: raw8/raw10/raw12/raw16
  • RGB-IR sensor input
  • 3A: include AE/Histogram, AF, AWB statistics output
  • BLC: Black Level Correction
  • PDAF: Phase Detection Auto Focus
  • DPCC: Static/Dynamic defect pixel cluster correction
  • LSC: Lens shading correction
  • HDR: 2-Frame Merge into High-Dynamic Range
  • DRC/TMO: Dynamic Range Compression, Tone mapping in RGB field
  • Supports up to 120dB HDR with 20-bit data width
  • EXPANDER: Sensor expander
  • GIC: Green Imbalance Correction
  • Debayer: Advanced Adaptive Demosaic with Chromatic Aberration Correction(CAC)
  • CCM/CSM: Color correction matrix; RGB2YUV etc
  • Gamma: Gamma out correction
  • Dehaze/Enhance: Automatic Dehaze and edge enhancement
  • Bay3DNR: Advanced Temporal Noise reduce in RAW
  • YUVME: Noise Motion Estimate and Motion Compensation in YUV
  • 2DNR: Advanced Spatial Noise reduce in YUV
  • Sharp: Picture Sharpening & Edge Enhance in YUV
  • CGC: Color Gamut Compression, YUV full range/limit range convert
  • 3DLUT: 3D-Lut Color Palette for Customer
  • LDCH: Lens-distortion in the horizontal direction
  • LDCV: Lens-distortion in the vertical direction
  • Gain: Image local gain
  • Output Scale*2: support scale down level

2. K1 Pro摄像头​

K1 pro板上预留了一个4lane的MIPI CSI2S摄像头接口

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其引脚定义如下：

图1 K1摄像头接口定义

BIT-BRICK 提供了几款不同规格的摄像头(详情参考bit-brick硬件产品详情页)：

图1 K1摄像头接口定义

用户也可以根据实际的需要自行设计摄像头。已经支持的摄像头传感器如下：

图1 K1摄像头接口定义

建议选择上述列表中的传感器，可以减少软件调试的工作量。