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??系列專欄：uniapp前端
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本篇文章是借助微信小程序平臺，添加人臉采集的功能，你看上面的漂亮姐姐有什么理由不去采集一下她的人臉呢。????
開發(fā)環(huán)境：
開發(fā)框架：uniapp
開發(fā)平臺：微信小程序
標簽和樣式先上：
標簽：
<template>
<view class="page-content">
<view class="containerV">
<view class="headerV">
<view class="top-tips1">
<view>請將正對手機，頭部匹配攝像區(qū)域</view>
</view>
<view class="top-tips2">
為了捍衛(wèi)你的不要臉，請拍攝本人頭像
</view>
</view>
<view class="contentV">
<view class="mark"></view>
<image v-if="tempImg" mode="widthFix" :src="tempImg" />
<camera v-if='isAuthCamera' :device-position="devicePosition ?'front': 'back'" class="camera"
flash="off" resolution='high' />
<view v-show="!tempImg && tipsText" class="tipV">{{ tipsText }}</view>
</view>
<view class="footerV">
<view style="width: 100%;">
<view v-if="!tempImg" style="width: 100%;">
<view class="privacyV">
<view class="icon"></view>
<view class="text">
照片隱私<text @click="handleJumpSecurityClick">安全保障</text>中…
</view>
</view>
<view class="bottom-tips-2">該照片作為你不要臉的鐵證</view>
<view class="take-photo-bgV">
<!-- 圖片上傳 -->
<view v-show="true" class="btn-change-upload" @click="handleChooseImage" />
<!--拍照-->
<view class="btn-take-photo" @click="handleTakePhotoClick" />
<!-- 切換鏡頭 -->
<view class="btn-change-camera" @click="handleChangeCameraClick" />
</view>
</view>
<view class="confirmV" v-else>
<view class="btn-cancel" @click="handleCancelClick">
取消
</view>
<view class="btn-ok" @click="handleOkClick">
確定
</view>
</view>
</view>
</view>
</view>
</view>
</template>
樣式：
<style lang="scss" scoped>
.page-content {
width: 100%;
height: 100%;
.containerV {
width: 100%;
height: 100%;
.headerV {
.top-tips1 {
margin-top: 60rpx;
color: #1C1C1C;
font-size: 36rpx;
text-align: center;
}
.top-tips2 {
margin-top: 20rpx;
color: #00AAFF;
font-size: 28rpx;
text-align: center;
}
}
.contentV {
position: relative;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
height: 661rpx;
margin-top: 30rpx;
.tipV {
bottom: 30rpx;
position: absolute;
line-height: 90rpx;
padding-left: 24rpx;
padding-right: 24rpx;
max-width: calc(100vw - 50rpx * 2);
text-align: center;
font-size: 30rpx;
background: #000000;
opacity: 0.75;
color: #FFFFFF;
border-radius: 16rpx;
overflow: hidden;
white-space: nowrap;
text-overflow: ellipsis;
z-index: 5;
}
.camera {
width: 100%;
height: 100%;
}
.mark {
position: absolute;
left: 0;
top: 0;
z-index: 2;
width: 750rpx;
height: 100%;
background: url("@/static/face/view_face_background.png") no-repeat center bottom;
background-size: 750rpx 661rpx;
}
image {
position: absolute;
width: 100%;
height: 100%;
z-index: 3;
}
}
.footerV {
width: 100%;
display: flex;
flex-direction: row;
align-items: center;
justify-content: center;
.privacyV {
padding-top: 30rpx;
display: flex;
flex-direction: row;
align-items: center;
justify-content: center;
.text {
font-size: 30rpx;
color: #1C1C1C;
text-align: center;
line-height: 42rpx;
margin-left: 15rpx;
text {
font-size: 30rpx;
color: #00AAFF;
text-align: center;
line-height: 42rpx;
}
}
.icon {
width: 40rpx;
height: 47rpx;
background: url("@/static/face/icon_face_security.png") no-repeat;
background-size: 100% auto;
}
}
.bottom-tips-2 {
margin-top: 20rpx;
color: #999999;
text-align: center;
font-size: 26rpx;
}
.take-photo-bgV {
width: 100%;
margin-top: 30rpx;
display: flex;
flex-direction: row;
align-items: center;
justify-content: center;
.btn-take-photo {
// 由于左邊沒有按鈕，所以左邊要便宜更大，以便是拍照按鈕居中
margin: 0rpx 80rpx 0rpx 80rpx;
width: 196rpx;
height: 196rpx;
background: url("https://pro-file-qn.ztjy61.com/1003020211103145058685NNR9vlTm.png") no-repeat;
background-size: 100% auto;
}
.btn-change-upload {
left: 130rpx;
width: 80rpx;
height: 80rpx;
background: url("@/static/face/icon_face_upload_picture.png") no-repeat;
background-size: 100% auto;
}
.btn-change-camera {
right: 130rpx;
width: 80rpx;
height: 80rpx;
background: url("@/static/face/icon_face_switch_cameras.png") no-repeat;
background-size: 100% auto;
}
}
.confirmV {
margin: 200rpx 100rpx 0rpx 100rpx;
display: flex;
flex-direction: row;
align-items: center;
justify-content: space-between;
.btn-cancel {
font-size: 32rpx;
color: #1C1C1C;
}
.btn-ok {
font-size: 32rpx;
color: #00AAFF;
}
}
}
}
}
</style>
js邏輯：
關(guān)鍵點代碼中已經(jīng)注釋
<script>
export default {
name: 'index',
components: {
},
data() {
return {
tipsText: '', // 錯誤文案提示
tempImg: '', // 本地圖片路徑
cameraEngine: null, // 相機引擎
devicePosition: false, // 攝像頭朝向
isAuthCamera: true, // 是否擁有相機權(quán)限
}
},
onLoad(options) {
this.initData()
},
methods: {
// 初始化相機引擎
initData() {
// #ifdef MP-WEIXIN
// 1、初始化人臉識別
wx.initFaceDetect()
// 2、創(chuàng)建 camera 上下文 CameraContext 對象
this.cameraEngine = wx.createCameraContext()
// 3、獲取 Camera 實時幀數(shù)據(jù)
const listener = this.cameraEngine.onCameraFrame((frame) => {
if (this.tempImg) {
return;
}
// 4、人臉識別，使用前需要通過 wx.initFaceDetect 進行一次初始化，推薦使用相機接口返回的幀數(shù)據(jù)
wx.faceDetect({
frameBuffer: frame.data,
width: frame.width,
height: frame.height,
enablePoint: true,
enableConf: true,
enableAngle: true,
enableMultiFace: true,
success: (faceData) => {
let face = faceData.faceInfo[0]
if (faceData.x == -1 || faceData.y == -1) {
this.tipsText = '檢測不到人'
}
if (faceData.faceInfo.length > 1) {
this.tipsText = '請保證只有一個人'
} else {
const {
pitch,
roll,
yaw
} = face.angleArray;
const standard = 0.5
if (Math.abs(pitch) >= standard || Math.abs(roll) >= standard ||
Math.abs(yaw) >= standard) {
this.tipsText = '請平視攝像頭'
} else if (face.confArray.global <= 0.8 || face.confArray.leftEye <=
0.8 || face.confArray.mouth <= 0.8 || face.confArray.nose <= 0.8 ||
face.confArray.rightEye <= 0.8) {
this.tipsText = '請勿遮擋五官'
} else {
this.tipsText = '請拍照'
// 這里可以寫自己的邏輯了
}
}
},
fail: (err) => {
if (err.x == -1 || err.y == -1) {
this.tipsText = '檢測不到人'
} else {
this.tipsText = err.errMsg || '網(wǎng)絡(luò)錯誤，請退出頁面重試'
}
},
})
})
// 5、開始監(jiān)聽幀數(shù)據(jù)
listener.start()
// #endif
},
// 切換設(shè)備鏡頭
handleChangeCameraClick() {
this.devicePosition = !this.devicePosition;
},
// 圖片上傳
handleChooseImage() {
uni.chooseImage({
count: 1,
sizeType: ['original', 'compressed'],
sourceType: ['album'],
success: (res) => {
if (res.errMsg === 'chooseImage:ok') {
uni.showLoading({
title: '照片上傳中...'
})
console.log("===========:", res.tempFilePaths[0])
this.handleOkClick()
}
},
fail: (res) => {
},
});
},
// 拍照點擊
handleTakePhotoClick() {
if (this.tipsText != "" && this.tipsText != "請拍照") {
return;
}
uni.getSetting({
success: (res) => {
if (!res.authSetting['scope.camera']) {
this.isAuthCamera = false
uni.openSetting({
success: (res) => {
if (res.authSetting['scope.camera']) {
this.isAuthCamera = true;
}
}
})
}
}
})
this.cameraEngine.takePhoto({
quality: "high",
success: ({
tempImagePath
}) => {
this.tempImg = tempImagePath
console.log("=======tempImg:", this.tempImg)
}
})
},
// 點擊確定上傳
handleOkClick() {
uni.showLoading({
mask: true,
title: '校驗中...'
})
// 更新人臉識別圖片請求協(xié)議：傳七牛圖片鏈接
setTimeout(function() {
uni.hideLoading()
uni.showToast({
icon: "none",
title: "假裝圖片上傳成功",
duration: 2000,
})
}, 3000);
},
// 點擊 - 取消上傳
handleCancelClick() {
this.tempImg = ''
},
// 點擊 - 人臉安全保障按鈕
handleJumpSecurityClick() {
uni.showToast({
icon: "none",
title: "假裝跳轉(zhuǎn)人臉安全保障",
duration: 2000,
})
},
}
}
</script>
拓展：
可以將圖片上傳至服務(wù)器，由服務(wù)器做人臉識別，這樣功能就齊全了。
視頻為上：
人臉采集
demo：
1、gitee：https://gitee.com/chenzm_186/face-detect-mini
2、csdn：https://download.csdn.net/download/weixin_38633659/85385944
**??結(jié)束語?? **
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到了這里，關(guān)于使用uniapp開發(fā)微信小程序的人臉采集功能/人臉識別功能的文章就介紹完了。如果您還想了解更多內(nèi)容，請在右上角搜索TOY模板網(wǎng)以前的文章或繼續(xù)瀏覽下面的相關(guān)文章，希望大家以后多多支持TOY模板網(wǎng)！
