FPGA解码MIPIFPGA实现CSI-2 解码MIPI视频 2line 720P分辨率 OV5647采集 提供工程源码和输入：ov5647 2line mipi 720P分辨率开发板：Kint
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FPGA解码MIPIFPGA实现CSI-2 解码MIPI视频 2line 720P分辨率 OV5647采集 提供工程源码和输入：ov5647 2line mipi 720P分辨率开发板：Kintex7输出：HDMI，720P分辨率MIPI视频经过CSI-2解码，bayer转rgb，送入ddr3做三帧缓存后输出HDMI。。 <link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/base.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/fancy.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/90240452/2/raw.css" rel="stylesheet"/><div id="sidebar" style="display: none"><div id="outline"></div></div><div class="pf w0 h0" data-page-no="1" id="pf1"><div class="pc pc1 w0 h0"><img alt="" class="bi x0 y0 w1 h1" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/90240452/bg1.jpg"/><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">FPGA<span class="_ _0"> </span><span class="ff2">实现<span class="_ _1"> </span></span>CSI-2<span class="_ _0"> </span><span class="ff2">解码<span class="_ _1"> </span></span>MIPI<span class="_ _0"> </span><span class="ff2">视频的技术分析</span></div><div class="t m0 x1 h2 y2 ff2 fs0 fc0 sc0 ls0 ws0">摘要<span class="ff3">：</span>本文主要介绍了<span class="_ _1"> </span><span class="ff1">FPGA<span class="_ _0"> </span></span>解码<span class="_ _1"> </span><span class="ff1">MIPI<span class="_ _0"> </span></span>视频的实现过程<span class="ff3">，</span>以及相关工程源码和详细设计文档的链接</div><div class="t m0 x1 h2 y3 ff4 fs0 fc0 sc0 ls0 ws0">。<span class="ff2">文章首先介绍了所使用的设备和开发板<span class="ff3">，</span>包括<span class="_ _1"> </span><span class="ff1">OV5647<span class="_ _0"> </span></span>图像传感器</span>、<span class="ff1">Kintex7<span class="_ _0"> </span><span class="ff2">开发板等</span></span>。<span class="ff2">然后详</span></div><div class="t m0 x1 h2 y4 ff2 fs0 fc0 sc0 ls0 ws0">细讲解了<span class="_ _1"> </span><span class="ff1">MIPI<span class="_ _0"> </span></span>视频的解码过程<span class="ff3">，</span>包括<span class="_ _1"> </span><span class="ff1">CSI-2<span class="_ _0"> </span></span>解码<span class="ff4">、<span class="ff1">bayer<span class="_ _0"> </span></span></span>转<span class="_ _1"> </span><span class="ff1">rgb<span class="_ _0"> </span></span>以及<span class="_ _1"> </span><span class="ff1">DDR3<span class="_ _0"> </span></span>三帧缓存等<span class="ff4">。</span>最后<span class="ff3">，</span></div><div class="t m0 x1 h2 y5 ff2 fs0 fc0 sc0 ls0 ws0">文章给出了与本文主题相关的链接和联系方式<span class="ff4">。</span></div><div class="t m0 x1 h2 y6 ff1 fs0 fc0 sc0 ls0 ws0">1.<span class="_ _2"> </span><span class="ff2">引言</span></div><div class="t m0 x1 h2 y7 ff2 fs0 fc0 sc0 ls0 ws0">近年来<span class="ff3">，</span>随着摄像技术的不断发展<span class="ff3">，<span class="ff1">MIPI</span>（<span class="ff1">Mobile Industry Processor Interface</span>）</span>接口被</div><div class="t m0 x1 h2 y8 ff2 fs0 fc0 sc0 ls0 ws0">广泛应用于高清视频传输领域<span class="ff4">。</span>而<span class="_ _1"> </span><span class="ff1">FPGA<span class="ff3">（</span>Field-Programmable Gate Array<span class="ff3">）</span></span>作为一种可编程</div><div class="t m0 x1 h2 y9 ff2 fs0 fc0 sc0 ls0 ws0">逻辑器件<span class="ff3">，</span>具备灵活性强<span class="ff4">、</span>性能优异等优点<span class="ff3">，</span>因此被广泛应用于高速视频处理任务中<span class="ff4">。</span>本文将介绍</div><div class="t m0 x1 h2 ya ff1 fs0 fc0 sc0 ls0 ws0">FPGA<span class="_ _0"> </span><span class="ff2">如何实现<span class="_ _1"> </span></span>CSI-2<span class="_ _0"> </span><span class="ff2">解码<span class="_ _1"> </span></span>MIPI<span class="_ _0"> </span><span class="ff2">视频的过程<span class="ff4">。</span></span></div><div class="t m0 x1 h2 yb ff1 fs0 fc0 sc0 ls0 ws0">2.<span class="_ _2"> </span><span class="ff2">设备和开发板介绍</span></div><div class="t m0 x1 h2 yc ff2 fs0 fc0 sc0 ls0 ws0">本文选取了<span class="_ _1"> </span><span class="ff1">OV5647<span class="_ _0"> </span></span>图像传感器作为输入设备<span class="ff3">，<span class="ff1">Kintex7<span class="_ _0"> </span></span></span>开发板作为<span class="_ _1"> </span><span class="ff1">FPGA<span class="_ _0"> </span></span>实现的平台<span class="ff4">。<span class="ff1">OV5647<span class="_ _0"> </span></span></span>图</div><div class="t m0 x1 h2 yd ff2 fs0 fc0 sc0 ls0 ws0">像传感器具备<span class="_ _1"> </span><span class="ff1">720P<span class="_ _0"> </span></span>分辨率和<span class="_ _1"> </span><span class="ff1">2line mipi<span class="_ _0"> </span></span>接口的特点<span class="ff3">，</span>适合用于本文的实验<span class="ff4">。<span class="ff1">Kintex7<span class="_ _0"> </span></span></span>开发板具</div><div class="t m0 x1 h2 ye ff2 fs0 fc0 sc0 ls0 ws0">备较高的时钟频率和丰富的逻辑资源<span class="ff3">，</span>是一个理想的<span class="_ _1"> </span><span class="ff1">FPGA<span class="_ _0"> </span></span>开发平台<span class="ff4">。</span></div><div class="t m0 x1 h2 yf ff1 fs0 fc0 sc0 ls0 ws0">3.<span class="_ _2"> </span>MIPI<span class="_ _0"> </span><span class="ff2">视频解码过程</span></div><div class="t m0 x1 h2 y10 ff1 fs0 fc0 sc0 ls0 ws0">3.1.<span class="_"> </span>CSI-2<span class="_ _0"> </span><span class="ff2">解码</span></div><div class="t m0 x1 h2 y11 ff1 fs0 fc0 sc0 ls0 ws0">CSI-2<span class="_ _0"> </span><span class="ff2">是<span class="_ _1"> </span></span>MIPI<span class="_ _0"> </span><span class="ff2">接口中常用的图像传输协议<span class="ff3">，</span>它使用高速差分信号进行数据传输<span class="ff4">。</span>在<span class="_ _1"> </span></span>FPGA<span class="_ _0"> </span><span class="ff2">中<span class="ff3">，</span>可以</span></div><div class="t m0 x1 h2 y12 ff2 fs0 fc0 sc0 ls0 ws0">使用<span class="_ _1"> </span><span class="ff1">SerDes<span class="ff3">（</span>Serializer/Deserializer<span class="ff3">）</span></span>模块将<span class="_ _1"> </span><span class="ff1">CSI-2<span class="_ _0"> </span></span>信号转换为并行数据<span class="ff4">。</span>然后<span class="ff3">，</span>通过解</div><div class="t m0 x1 h2 y13 ff2 fs0 fc0 sc0 ls0 ws0">析<span class="_ _1"> </span><span class="ff1">CSI-2<span class="_ _0"> </span></span>协议<span class="ff3">，</span>将数据提取出来并进行进一步的处理<span class="ff4">。</span></div><div class="t m0 x1 h2 y14 ff1 fs0 fc0 sc0 ls0 ws0">3.2.<span class="_"> </span>Bayer<span class="_ _0"> </span><span class="ff2">转<span class="_ _1"> </span></span>RGB</div><div class="t m0 x1 h2 y15 ff2 fs0 fc0 sc0 ls0 ws0">在<span class="_ _1"> </span><span class="ff1">CSI-2<span class="_ _0"> </span></span>解码后<span class="ff3">，</span>得到的是<span class="_ _1"> </span><span class="ff1">Bayer<span class="_ _0"> </span></span>格式的图像数据<span class="ff3">，</span>需要进行<span class="_ _1"> </span><span class="ff1">Bayer<span class="_ _0"> </span></span>转<span class="_ _1"> </span><span class="ff1">RGB<span class="_ _0"> </span></span>的处理<span class="ff4">。<span class="ff1">Bayer<span class="_ _0"> </span></span></span>格式</div><div class="t m0 x1 h2 y16 ff2 fs0 fc0 sc0 ls0 ws0">是一种单通道的图像格式<span class="ff3">，</span>其中每个像素点只包含红<span class="ff4">、</span>绿<span class="ff4">、</span>蓝三个颜色通道中的一个<span class="ff4">。</span>通过对<span class="_ _1"> </span><span class="ff1">Bayer</span></div><div class="t m0 x1 h2 y17 ff2 fs0 fc0 sc0 ls0 ws0">格式的图像数据进行差值运算<span class="ff3">，</span>可以得到<span class="_ _1"> </span><span class="ff1">RGB<span class="_ _0"> </span></span>格式的图像数据<span class="ff4">。</span></div><div class="t m0 x1 h2 y18 ff1 fs0 fc0 sc0 ls0 ws0">3.3.<span class="_"> </span>DDR3<span class="_ _0"> </span><span class="ff2">三帧缓存</span></div><div class="t m0 x1 h2 y19 ff2 fs0 fc0 sc0 ls0 ws0">为了确保图像的连续性和流畅性<span class="ff3">，</span>需要使用<span class="_ _1"> </span><span class="ff1">DDR3<span class="_ _0"> </span></span>作为图像数据的缓存<span class="ff4">。</span>通过将图像数据存储在</div><div class="t m0 x1 h2 y1a ff1 fs0 fc0 sc0 ls0 ws0">DDR3<span class="_ _0"> </span><span class="ff2">中<span class="ff3">，</span>可以实现对图像数据的三帧缓存<span class="ff3">，</span>保证图像数据的流畅传输<span class="ff4">。</span></span></div><div class="t m0 x1 h2 y1b ff1 fs0 fc0 sc0 ls0 ws0">4.<span class="_ _2"> </span><span class="ff2">输出<span class="_ _1"> </span></span>HDMI</div><div class="t m0 x1 h2 y1c ff2 fs0 fc0 sc0 ls0 ws0">经过<span class="_ _1"> </span><span class="ff1">CSI-2<span class="_ _0"> </span></span>解码<span class="ff4">、<span class="ff1">Bayer<span class="_ _0"> </span></span></span>转<span class="_ _1"> </span><span class="ff1">RGB<span class="_ _0"> </span></span>和<span class="_ _1"> </span><span class="ff1">DDR3<span class="_ _0"> </span></span>三帧缓存后<span class="ff3">，</span>图像数据可以进行进一步的处理和输出<span class="ff4">。</span>在</div><div class="t m0 x1 h2 y1d ff2 fs0 fc0 sc0 ls0 ws0">本实验中<span class="ff3">，</span>我们选择将图像数据输出到<span class="_ _1"> </span><span class="ff1">HDMI<span class="_ _0"> </span></span>接口<span class="ff3">，</span>实现<span class="_ _1"> </span><span class="ff1">720P<span class="_ _0"> </span></span>分辨率的视频输出<span class="ff4">。</span></div><div class="t m0 x1 h2 y1e ff1 fs0 fc0 sc0 ls0 ws0">5.<span class="_ _2"> </span><span class="ff2">结论</span></div></div><div class="pi" data-data='{"ctm":[1.568627,0.000000,0.000000,1.568627,0.000000,0.000000]}'></div></div>