点亮你的生活，两步教你解决图像逆光
<section style="box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="text-align: center;margin: 10px 0%;box-sizing: border-box;"><section class="" style="display: inline-block;width: 95%;vertical-align: top;border-style: solid;border-width: 2px;border-radius: 0px;border-color: rgb(181, 180, 180);box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin: -5px 0% 5px;transform: translate3d(-5px, 0px, 0px);-webkit-transform: translate3d(-5px, 0px, 0px);-moz-transform: translate3d(-5px, 0px, 0px);-o-transform: translate3d(-5px, 0px, 0px);box-sizing: border-box;"><section class="" style="display: inline-block;width: 100%;vertical-align: top;background-color: rgb(252, 221, 93);padding: 5px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="display: inline-block;width: 100%;vertical-align: top;border-style: solid;border-width: 2px;border-radius: 0px;border-color: rgb(255, 202, 0);background-color: rgb(255, 255, 255);padding: 10px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 10px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="color: rgb(100, 100, 100);box-sizing: border-box;"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">康康小课堂</strong><br style="box-sizing: border-box;"></p></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-right: 0%;margin-bottom: 8px;margin-left: 0%;box-sizing: border-box;"><section class="" style="background-color: rgb(181, 180, 180);height: 2px;box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="display: inline-block;width: 100%;vertical-align: top;padding: 10px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 10px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="text-align: justify;font-size: 15px;color: rgb(100, 100, 100);letter-spacing: 1.2px;line-height: 1.9;box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><span style="font-size: 14px;box-sizing: border-box;">在逆光环境中，远处亮处，光线强度较高，近处人脸，由于光线较暗，设备根据整体环境曝光会导致关键的人脸较暗。</span></p><p style="white-space: normal;box-sizing: border-box;"><span style="font-size: 14px;box-sizing: border-box;">康康今天就给大家讲解一下人脸相机如何调节参数来优化图像。</span><br style="box-sizing: border-box;"></p></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin: 10px 0%;box-sizing: border-box;"><section class="" style="display: inline-block;width: 100%;vertical-align: top;padding: 10px;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 10px;margin-right: 0%;margin-left: 0%;text-align: center;font-size: 11px;box-sizing: border-box;"><section class="" style="display: inline-block;box-sizing: border-box;"><section style="width: 2.6em;height: 2.6em;display: inline-block;vertical-align: middle;line-height: 2.6em;border-radius: 50%;background-color: rgb(255, 202, 0);box-sizing: border-box;"><section style="width: 1.8em;height: 1.8em;line-height: 1.8em;border-radius: 50%;margin-top: 0.36em;margin-bottom: 0.35em;margin-left: 0.44em;background-color: rgb(255, 255, 255);box-sizing: border-box;"><section class="" style="width: 100%;height: 100%;font-size: 13px;color: rgb(100, 100, 100);box-sizing: border-box;"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">1</strong></p></section></section></section><section style="margin: -0.5em auto 0.3em;width: 0px;border-top: 1.1em solid rgb(255, 202, 0);border-left: 1em solid transparent !important;border-right: 1.12em solid transparent !important;box-sizing: border-box;"></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 10px;margin-bottom: 10px;text-align: center;box-sizing: border-box;"><section class="" style="width: 100%;box-sizing: border-box;"><section class="" style="border-bottom: 2px solid rgb(255, 202, 0);display: inline-block;vertical-align: top;padding-left: 5px;padding-right: 5px;margin-bottom: -1px;color: rgb(100, 100, 100);line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">确认室内光线情况</strong></p></section><section style="border-bottom: 1px solid rgb(160, 160, 160);width: 100%;box-sizing: border-box;"></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;">室内如果光线充足，说明设备有调试空间，可以通过调试拉高人脸亮度，如果室内光线不足或完全无光，说明设备调试优化程度有限，这时候就需要加室内补光灯。</p></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="box-sizing: border-box;"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section class="" style="max-width: 100%;vertical-align: middle;display: inline-block;box-shadow: rgb(160, 160, 160) 5px 0px 10px;overflow: hidden !important;box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin: 10px 0%;box-sizing: border-box;"><section class="" style="display: inline-block;width: 100%;vertical-align: top;padding: 10px;border-style: dashed;border-width: 1px;border-radius: 0px;border-color: rgb(100, 100, 100);box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="text-align: justify;font-size: 14px;color: rgb(63, 60, 60);line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;">在图像-显示设置-曝光中，建议手动光圈调试，调试完毕后再改成自动，曝光时间设定1/100。将增益从100调整至50。</p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;">如果在增益调整过程中，图像亮度变化较大，说明图像亮度基本靠增益拉高，现场室内亮度低，可调整程度不大，需要加补光灯；反之，室内亮度充足，可调整程度高。<br style="box-sizing: border-box;"></p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin: 10px 0%;box-sizing: border-box;"><section class="" style="display: inline-block;width: 100%;vertical-align: top;padding: 10px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 10px;margin-right: 0%;margin-left: 0%;text-align: center;font-size: 11px;box-sizing: border-box;"><section class="" style="display: inline-block;box-sizing: border-box;"><section style="width: 2.6em;height: 2.6em;display: inline-block;vertical-align: middle;line-height: 2.6em;border-radius: 50%;background-color: rgb(255, 202, 0);box-sizing: border-box;"><section style="width: 1.8em;height: 1.8em;line-height: 1.8em;border-radius: 50%;margin-top: 0.36em;margin-bottom: 0.35em;margin-left: 0.44em;background-color: rgb(255, 255, 255);box-sizing: border-box;"><section class="" style="width: 100%;height: 100%;font-size: 13px;color: rgb(100, 100, 100);box-sizing: border-box;"><p style="box-sizing: border-box;">2</p></section></section></section><section style="margin: -0.5em auto 0.3em;width: 0px;border-top: 1.1em solid rgb(255, 202, 0);border-left: 1em solid transparent !important;border-right: 1.12em solid transparent !important;box-sizing: border-box;"></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 10px;margin-bottom: 10px;text-align: center;box-sizing: border-box;"><section class="" style="width: 100%;box-sizing: border-box;"><section class="" style="border-bottom: 2px solid rgb(255, 202, 0);display: inline-block;vertical-align: top;padding-left: 5px;padding-right: 5px;margin-bottom: -1px;color: rgb(100, 100, 100);line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">打开宽动态或人脸曝光</strong></p></section><section style="border-bottom: 1px solid rgb(160, 160, 160);width: 100%;box-sizing: border-box;"></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section class="" style="max-width: 100%;vertical-align: middle;display: inline-block;box-shadow: rgb(160, 160, 160) 5px 0px 10px;overflow: hidden !important;box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin: 10px 0%;box-sizing: border-box;"><section class="" style="display: inline-block;width: 100%;vertical-align: top;padding: 10px;border-style: dashed;border-width: 1px;border-radius: 0px;border-color: rgb(100, 100, 100);box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="text-align: justify;font-size: 14px;color: rgb(181, 180, 180);line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(63, 60, 60);box-sizing: border-box;">在图像-显示设置中，打开宽动态。</span></p><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(63, 60, 60);box-sizing: border-box;">宽动态说明：</span></p><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(63, 60, 60);box-sizing: border-box;">0-40：数字宽动态——一次曝光，对亮处进行压制，对暗处提增益。</span></p><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(63, 60, 60);box-sizing: border-box;">40-100：帧宽动态——对亮出与暗处进行两次曝光，短曝光和长曝光叠加。</span></p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="text-align: center;margin-top: 0.5em;margin-bottom: 0.5em;padding-left: 0.5em;padding-right: 0.5em;box-sizing: border-box;"><section class="" style="box-sizing: border-box;width: 100%;box-shadow: rgb(102, 102, 102) 3.53553px 3.53553px 8px;display: inline-block;height: auto !important;overflow: hidden !important;border-color: white;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin: 10px 0%;box-sizing: border-box;"><section class="" style="display: inline-block;width: 100%;vertical-align: top;padding: 10px;border-style: dashed;border-width: 1px;border-radius: 0px;border-color: rgb(100, 100, 100);box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="text-align: justify;font-size: 14px;color: rgb(63, 60, 60);line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;">在智能分析-高级参数中，勾选人脸曝光。</p><p style="white-space: normal;box-sizing: border-box;">人脸曝光说明：</p><p style="white-space: normal;box-sizing: border-box;">根据人脸亮度进行调整整体图像亮度。</p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;border-color: rgb(255, 202, 0);width: 100%;padding: 3px 5px;border-width: 1px 1px 1px 4px;border-style: solid;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;">优先级：</strong></p><p style="box-sizing: border-box;">★偏重人脸效果的话优先开启人脸曝光；如果需要兼顾人脸与环境，建议开启宽动态。</p><p style="box-sizing: border-box;">★<span style="letter-spacing: 0px;box-sizing: border-box;">数字宽动态和帧宽动态优先选择数字宽动态。</span></p><p style="box-sizing: border-box;">★<span style="letter-spacing: 0px;box-sizing: border-box;">逆光程度一般（室内有光）——建议调整数字宽动态，不建议超过20。</span></p><p style="box-sizing: border-box;"><span style="letter-spacing: 0px;box-sizing: border-box;">★</span><span style="letter-spacing: 0px;box-sizing: border-box;">逆光程度严重（室内光很弱，室外强光）——建议调整帧宽动态。</span></p><p style="box-sizing: border-box;"><span style="letter-spacing: 0px;box-sizing: border-box;"></span></p><p style="box-sizing: border-box;">★如果人员横向运动较多，不使用帧宽动态，黑色边缘对后端比对有影响。</p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="display: inline-block;width: 100%;vertical-align: top;background-image: url("https://mmbiz.qpic.cn/mmbiz_gif/p8CaKzvQibq5zrpqd6SoamM2NyKBkUNW1Vq48jGAj150aQnbTw0YZ0LB7RxBgtndZ2CrqIPuAiawCBNl9UPweEJw/640?wx_fmt=gif");background-position: 0% 0%;background-repeat: repeat;background-size: 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