必学 | 人脸摄像机选点、安装
<p style="text-align: center;"></p><p style="text-align: center;"><br></p><section style="box-sizing: border-box;"><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section style="width: 100%;height: 5px;background-color: rgb(255, 202, 0);box-sizing: border-box;"></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="box-sizing: border-box;"><section style="display: inline-block;vertical-align: top;width: 15%;box-sizing: border-box;"><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="margin: -10px 0% 10px;font-size: 19px;box-sizing: border-box;"><section style="display: inline-block;vertical-align: top;width: 2em;padding: 0.3em 0.5em;background-color: rgb(255, 202, 0);box-sizing: border-box;"><section style="height: 0.5em;width: 0.5em;margin: 5px auto;border-radius: 100%;background-color: rgb(255, 255, 255);box-sizing: border-box;"></section><section style="color: rgb(255, 255, 255);line-height: 1.3em;font-size: 16px;box-sizing: border-box;"><p style="box-sizing: border-box;">人脸抓拍机</p><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section></section></section><section style="display: inline-block;vertical-align: top;width: 70%;padding-right: 5px;padding-left: 5px;box-sizing: border-box;"><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="box-sizing: border-box;"><section style="text-align: justify;color: rgb(115, 120, 121);font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"> 通过上篇文章我们知道了一款具有人脸识别功能的海康威视智脑NVR，型号为iDS-7900NX-K4/FA。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;"> 这款产品可以直接在本地设备上对抓拍的图像进行处理，从而实现人脸识别功能，同时对前端设备没有特殊的要求，集成化的便利设计广受大家欢迎。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;"> 然而，经常会有小伙伴对前端设备的安装感到一定的困惑，所以今天为大家科普一下人脸识别前端设备的勘点与安装规范。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section></section><section style="display: inline-block;vertical-align: top;width: 15%;box-sizing: border-box;"><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;margin: -10px 0% 10px;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;width: 60%;box-sizing: border-box;"></section></section></section></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="margin: 10px 0%;box-sizing: border-box;"><section style="display: inline-block;vertical-align: top;width: 13%;box-sizing: border-box;"><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;border-style: solid;border-width: 6px;border-radius: 50%;border-color: rgb(255, 202, 0);overflow: hidden;width: 100%;box-sizing: border-box;"></section></section></section></section><section style="display: inline-block;vertical-align: top;width: 87%;box-sizing: border-box;"><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="margin-top: 15px;margin-right: 0%;margin-left: 0%;transform: translate3d(-2px, 0px, 0px);box-sizing: border-box;"><section style="display: inline-block;vertical-align: top;padding-left: 6px;box-sizing: border-box;"><section style="margin-left: 6px;padding-right: 5px;padding-bottom: 2px;padding-left: 5px;border-bottom: 1px solid rgb(255, 202, 0);border-top-color: rgb(255, 202, 0);border-right-color: rgb(255, 202, 0);border-left-color: rgb(255, 202, 0);margin-right: 6px;font-size: 15px;color: rgb(249, 110, 87);box-sizing: border-box;"><p style="box-sizing: border-box;">1.生活中的常用点位</p></section><section style="height: 22px;border-left: 1px solid rgb(255, 202, 0);margin-top: -21px;transform: rotate(-30deg);-webkit-transform: rotate(-30deg);-moz-transform: rotate(-30deg);-o-transform: rotate(-30deg);transform-origin: 0px center 0px;-webkit-transform-origin: 0px center 0px;-moz-transform-origin: 0px center 0px;-o-transform-origin: 0px center 0px;border-top-color: rgb(255, 202, 0);border-right-color: rgb(255, 202, 0);border-bottom-color: rgb(255, 202, 0);box-sizing: border-box;"></section></section></section></section></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="box-sizing: border-box;"><section style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="box-sizing: border-box;"><section style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;">普通摄像机搭配海康智脑NVR进行人脸侦测的选点非常重要，直接关系到抓拍的效果。所以呢，安装位置一般是重点场所的入口通道或者大门位置。</p><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="box-sizing: border-box;">比如这里（交通枢纽）：地铁，火车站、汽车站、机场以大门、安检门出入口为主，机场一般可以设置在行人通道上哦。</p></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;box-sizing: border-box;"></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;box-sizing: border-box;"></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="box-sizing: border-box;"><section style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;"><span style="letter-spacing: 1.2px;box-sizing: border-box;">这里（小区）：小区选点主要以小区出入口为主，目的是抓拍到所有进出小区人员的正面人脸哦。</span></p></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;box-sizing: border-box;"></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="box-sizing: border-box;"><section style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;">还有这里（医院）：现在医院一般都实行人和车分开走哦，人脸抓拍摄像机安装在人员进入的大门口或通道就行啦。如果没有特定通道，需要选择宽度约为2.5米的道路进行抓拍。</p></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;box-sizing: border-box;"></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="margin: 10px 0%;box-sizing: border-box;"><section style="display: inline-block;vertical-align: top;width: 13%;box-sizing: border-box;"><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;border-style: solid;border-width: 6px;border-radius: 50%;border-color: rgb(255, 202, 0);overflow: hidden;width: 100%;box-sizing: border-box;"></section></section></section></section><section style="display: inline-block;vertical-align: top;width: 87%;box-sizing: border-box;"><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="margin-top: 15px;margin-right: 0%;margin-left: 0%;transform: translate3d(-2px, 0px, 0px);box-sizing: border-box;"><section style="display: inline-block;vertical-align: top;padding-left: 6px;box-sizing: border-box;"><section style="margin-left: 6px;padding-right: 5px;padding-bottom: 2px;padding-left: 5px;border-bottom: 1px solid rgb(255, 202, 0);border-top-color: rgb(255, 202, 0);border-right-color: rgb(255, 202, 0);border-left-color: rgb(255, 202, 0);margin-right: 6px;font-size: 15px;color: rgb(249, 110, 87);box-sizing: border-box;"><p style="box-sizing: border-box;">2.具体安装环境的选择</p></section><section style="height: 22px;border-left: 1px solid rgb(255, 202, 0);margin-top: -21px;transform: rotate(-30deg);-webkit-transform: rotate(-30deg);-moz-transform: rotate(-30deg);-o-transform: rotate(-30deg);transform-origin: 0px center 0px;-webkit-transform-origin: 0px center 0px;-moz-transform-origin: 0px center 0px;-o-transform-origin: 0px center 0px;border-top-color: rgb(255, 202, 0);border-right-color: rgb(255, 202, 0);border-bottom-color: rgb(255, 202, 0);box-sizing: border-box;"></section></section></section></section></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="box-sizing: border-box;"><section style="line-height: 1.9;letter-spacing: 1.2px;font-size: 14px;box-sizing: border-box;"><p style="box-sizing: border-box;">① 需要选择具有标准的人员通道或者出入口的安装环境，以规范人员具有唯一的通行方向，确保摄像机能够抓拍到该方向上所有进入或者离开人员的正脸；</p><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="box-sizing: border-box;">② 需要选择具有稳定、充足的光照环境，在背光条件及光线不足条件下能够补光，确保人脸特征的清晰可见。</p><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;box-sizing: border-box;"></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="box-sizing: border-box;"><section style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="margin: 10px 0%;box-sizing: border-box;"><section style="display: inline-block;vertical-align: top;width: 13%;box-sizing: border-box;"><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;border-style: solid;border-width: 6px;border-radius: 50%;border-color: rgb(255, 202, 0);overflow: hidden;width: 100%;box-sizing: border-box;"></section></section></section></section><section style="display: inline-block;vertical-align: top;width: 87%;box-sizing: border-box;"><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="margin-top: 15px;margin-right: 0%;margin-left: 0%;transform: translate3d(-2px, 0px, 0px);box-sizing: border-box;"><section style="display: inline-block;vertical-align: top;padding-left: 6px;box-sizing: border-box;"><section style="margin-left: 6px;padding-right: 5px;padding-bottom: 2px;padding-left: 5px;border-bottom: 1px solid rgb(255, 202, 0);border-top-color: rgb(255, 202, 0);border-right-color: rgb(255, 202, 0);border-left-color: rgb(255, 202, 0);margin-right: 6px;font-size: 15px;color: rgb(249, 110, 87);box-sizing: border-box;"><p style="box-sizing: border-box;">3.人脸抓拍摄像机的安装步骤</p></section><section style="height: 22px;border-left: 1px solid rgb(255, 202, 0);margin-top: -21px;transform: rotate(-30deg);-webkit-transform: rotate(-30deg);-moz-transform: rotate(-30deg);-o-transform: rotate(-30deg);transform-origin: 0px center 0px;-webkit-transform-origin: 0px center 0px;-moz-transform-origin: 0px center 0px;-o-transform-origin: 0px center 0px;border-top-color: rgb(255, 202, 0);border-right-color: rgb(255, 202, 0);border-bottom-color: rgb(255, 202, 0);box-sizing: border-box;"></section></section></section></section></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="box-sizing: border-box;"><section style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;">① 摄像机镜头至人员通道出入口中间空旷、无遮挡；</p></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;box-sizing: border-box;"></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="box-sizing: border-box;"><section style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;">② 摄像机设在通道正前方，正对人脸抓拍，水平方向偏转角度<15°，越小越好哦；</p></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;box-sizing: border-box;"></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="box-sizing: border-box;"><section style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;">③ 摄像机安装需具有一定俯视角度，避免一前一后人员经过通道时后方人脸被遮挡，垂直方向俯视角度α=10°±3°；</p></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;box-sizing: border-box;"></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="box-sizing: border-box;"><section style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;">④ 摄像机分辨率的大小决定了设备可监控宽度的范围。监控宽度过大会导致人脸抓拍图片模糊。所以一个合适的监控宽度十分重要。</p><p style="box-sizing: border-box;"><span style="font-size: 14px;letter-spacing: 1.2px;"><br></span></p><p style="box-sizing: border-box;"><span style="font-size: 14px;letter-spacing: 1.2px;">贴心的小编为大家统计了200W到800W分辨率摄像机的最佳监控宽度。</span></p></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;box-sizing: border-box;"></section></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><br></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="box-sizing: border-box;"><section style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;">⑤ 人脸抓拍重要因素-瞳距（瞳孔的距离）</p><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="box-sizing: border-box;">摄拍图片中要辨清人脸细节要求人脸覆盖的像素达到120像素点（瞳距达到40像素点）</p><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="box-sizing: border-box;"><span style="letter-spacing: 0px;box-sizing: border-box;">下面小编以某位小伙伴的照片为例给大家解释一下:通过IE预览摄像机，点击预览界面右下角抓图获取图片，用画图工具打开，进行框选，瞳距框选像素至少40+才能满足要求。</span></p><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><p style="text-align: center;"></p></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="box-sizing: border-box;"><section style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;">⑥ 摄像机安装高度</p><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="color: rgb(62, 62, 62);box-sizing: border-box;">最重要的来了，敲黑板，记下来！</span></strong></p><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;box-sizing: border-box;"></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="box-sizing: border-box;"><section style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;">◆镜头架设高度为：H=1.5+0.18*D（通用各个像素型号）</p><p style="box-sizing: border-box;">◆D为监控距离</p><p style="box-sizing: border-box;">◆人头部以下高度取平均值1.5米</p><p style="box-sizing: border-box;">◆α为摄像机俯视角度 </p><p style="box-sizing: border-box;">◆推荐俯视角度为10°，tan10°≈0.18</p><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="box-sizing: border-box;"><section style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">注意哦</strong>：由于人脸抓拍对场景的选择和摄像机的点位安装有着较高的要求，不能够一概而论。只有具体问题的具体分析，根据现场的特定环境及用户的需求来部署摄像机，才能够取得最佳效果哦。</p></section></section></section></section><p><br></p><section style="margin-right: auto;margin-left: auto;font-family: 微软雅黑;font-size: 16px;text-align: center;white-space: normal;width: 2.6em;"></section><section class="135brush" data-brushtype="text" style="font-family: 微软雅黑;font-size: 16px;text-align: center;white-space: normal;letter-spacing: 1.5px;">END</section><section style="box-sizing: border-box;"><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;box-sizing: border-box;"></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="box-sizing: border-box;"><section style="box-sizing: border-box;"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="margin-top: 0.5em;margin-bottom: 0.5em;box-sizing: border-box;"><section style="margin-bottom: -10px;padding-right: 5px;padding-left: 5px;font-size: 18px;text-align: right;color: rgb(249, 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class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="box-sizing: border-box;"><section style="font-size: 12px;box-sizing: border-box;"><p style="box-sizing: border-box;">长按识别二维码下载</p></section></section></section></section></section></section></section><section class="V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section style="box-sizing: border-box;"><section style="box-sizing: border-box;"><p style="box-sizing: border-box;"><br></p></section></section></section></section>
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