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基于ADV212的实时图像压缩系统 总被引:1,自引:1,他引:0
采用专用图像压缩芯片ADV212设计了一个能对分辨力高、数据量大的图像进行实时压缩的系统.该系统能够根据输入数据率自适应调整压缩比,实时产生JPEG2000格式的码流.ADV212输出的码流经过加密后可以实时输出也可在本系统内存储.实验结果表明,该系统能满足实时性要求,同时所得重建图像具有较好的主观视觉感受和较高的峰值信噪比. 相似文献
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While quality assessment is essential for testing, optimizing, benchmarking, monitoring, and inspecting related systems and services, it also plays an essential role in the design of virtually all visual signal processing and communication algorithms, as well as various related decision-making processes. In this pa-per, we first provide an overview of recently derived quality assessment approaches for traditional visual signals (i.e., 2D im-ages/videos), with highlights for new trends (such as machine learning approaches). On the other hand, with the ongoing development of devices and multimedia services, newly emerged visual signals (e.g., mobile/3D videos) are becoming more and more popular. This work focuses on recent progresses of quality metrics, which have been reviewed for the newly emerged forms of visual signals, which include scalable and mobile videos, High Dynamic Range (HDR) images, image segmentation results, 3D images/videos, and retargeted images. 相似文献
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光谱探测技术在未来智能装备中发挥着视觉检测、理化分析和过程控制等智能识别的作用,广泛应用于食品安全、医学诊断、环境监测、防伪鉴别、植物病害抑制、预警侦察等领域。传统光谱探测系统因受限于分光元件而存在体积大、成本高和定制化能力有限等问题。基于微机电系统(MEMS)技术的法布里-珀罗(FP)滤波芯片为微型化、低成本和定制化的光谱探测系统提供了新的解决途径。近三十年来,针对实用化MEMS-FP滤波芯片的研究已取得长足的进展,并已应用于实际的微小型光谱探测系统中,但在芯片制造、器件性能和系统集成方面仍面临诸多要攻克的难题。对MEMS-FP滤波芯片的原理和性能、器件分类、实用化研究进展进行了综述,并分析了目前存在的问题和未来的发展趋势。 相似文献
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