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Short Description

新一代图像和机器视觉处理器,为嵌入式系统提供接近于人眼的视觉和感知。

Overview

CEVA-XM4 is the 4th generation imaging and computer vision processor IP from CEVA, designed to bring human-like vision and visual perception to embedded systems. CEVA-XM4 solves the most critical issues for the development of energy-efficient embedded vision systems where the die size and power budget are extremely constrained, yet the algorithms require heavy processing capabilities. CEVA-XM4 enables the three key elements of intelligent vision processing: 3D vision, Computational Photography, Visual Perception and Analytics. With the CEVA-XM4 you can - Run computer vision on video streams (1080p, 4K) - Combine depth generation with vision processing (e.g. depth + augmented reality, depth + 3D scanning) - Enable multi-app processing (e.g. gesture + face detection + emotions + eye-tracking + optional depth) - Implement multi-frame algorithms in high resolution (e.g. super-resolution, refocus)

Benefits

  • Imitating human vision and adding computational photography to embedded systems is challenging, given the typically limited space and power resources.
  • To address these issues, CEVA incorporated programmable wide-vector architecture, with fixed- and floating-point processing, multiple simultaneous scalar units, and a vision-oriented low-power instruction set.
  • As a result, The CEVA-XM4 outperforms the most advanced GPU cluster shipping today by 33% faster processing, while consuming 9x less energy and is 17x smaller in die size.

Applications

  • Areas of expertise relate to quality image preparation for 3D vision, image enhancement supporting various computational photography applications and generating sophisticated visual perception and video analytics from the input data.
  • Computer vision algorithms supported include:
    • Real-time 3D depth map generation
    • Point cloud processing
    • 3D scanning
    • Object detection and tracking for example used in augmented reality (AR) applications
    • Object, image and scene recognition
    • Natural user interface applications such as face recognition, gesture recognition, user intent and emotion recognition user authentication and the like
  • Computational Photography algorithms supported include
  • Refocus image
  • Background replacement
  • Zoom
  • Super-resolution
  • Image and video stabilization
  • HDR
  • Noise reduction
  • Improved low-light capabilities.

Block Diagram

Features

  • Fully programmable in high level languages
  • Scalar and Vector units to handle a mix of control and parallel code efficiently
  • Very Long Instruction Word (VLIW) and Single Instruction Multiple Data (SIMD) functionality
  • Full memory sub-system for easy integration into SOCs, utilize multi-core and hardware accelerator connectivity using standard interfaces
  • Automated traffic management from the system into local memories to best performance and power efficiency
  • Flexible precision: A combination of mixing efficient fixed-point and floating-point math

Deliverables

  • CEVA-XM4 comes with a complete development platform including
  • Extensive vision libraries accessible directly from the CPU for offloading the computer vision functions to achieve energy saving
  • Robust software development tools and a software development framework
  • Hardware development platform
  • Product level software applications developed by CEVA, including Digital Video Stabilizer and Super Resolution

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