赞
踩
本示例展示了使用hiai引擎框架提供的人脸比对能力。
本示例模拟了在应用里,选择两张图片,计算两个图中最大人脸的相似度
需要使用hiai引擎框架人脸比对接口@hms.ai.face.faceComparator。
使用说明:
本示例展示的控件在@hms.ai.face.faceComparator.d.ets定义了文字比对API:
function compareFaces(visionInfo1: VisionInfo, visionInfo2: VisionInfo): Promise<FaceCompareResult>;
业务使用时,需要先进行import导入faceComparator 调用通用人脸比对接口,并传入想要比对的图片,接收处理返回的结果(文字信息)。参考:
import { faceComparator } from '@kit.CoreVisionKit'; import { image } from '@kit.ImageKit'; import { hilog } from '@kit.PerformanceAnalysisKit'; import { BusinessError } from '@kit.BasicServicesKit'; import { picker, fileIo } from '@kit.CoreFileKit'; @Entry @Component struct Index { @State chooseImage: PixelMap | undefined = undefined @State chooseImage1: PixelMap | undefined = undefined @State dataValues: string = '' build() { Column() { Image(this.chooseImage) .objectFit(ImageFit.Fill) .height('30%') .accessibilityDescription("默认图片1") Image(this.chooseImage1) .objectFit(ImageFit.Fill) .height('30%') .accessibilityDescription("默认图片2") Text(this.dataValues) .copyOption(CopyOptions.LocalDevice) .height('15%') .margin(10) .width('60%') Button('选择图片') .type(ButtonType.Capsule) .fontColor(Color.White) .alignSelf(ItemAlign.Center) .width('80%') .margin(10) .onClick(() => { // 拉起图库 this.selectImage() }) Button('人脸比对') .type(ButtonType.Capsule) .fontColor(Color.White) .alignSelf(ItemAlign.Center) .width('80%') .margin(10) .onClick(async () => { if(!this.chooseImage || !this.chooseImage1) { hilog.error(0x0000, 'FaceCompareSample', `Failed to choose image. chooseImage: ${this.chooseImage}`);; return; } // 调用人脸比对接口 let visionInfo: faceComparator.VisionInfo = { pixelMap: this.chooseImage, }; let visionInfo1: faceComparator.VisionInfo = { pixelMap: this.chooseImage1, }; try { let data:faceComparator.FaceCompareResult = await faceComparator.compareFaces(visionInfo, visionInfo1); let faceString = "相似度:"+ this.toPercentage(data.similarity)+((data.isSamePerson)?"。 是":"。 不是")+"同一个人"; hilog.info(0x0000, 'FaceCompareSample', `Succeeded in face detect:${faceString}`); this.dataValues = faceString; } catch (error) { hilog.error(0x0000, 'FaceCompareSample', `人脸比对出错: ${error}`); this.dataValues = "人脸比对出错,请确保两张图片中都有人脸。"; } }) } .width('100%') .height('100%') .justifyContent(FlexAlign.Center) } private toPercentage(num: number): string { return `${(num * 100).toFixed(2)}%`; } private async selectImage() { let uri = await this.openPhoto() if (uri === undefined) { hilog.error(0x0000, 'FaceCompareSample', "Failed to defined uri."); } this.loadImage(uri); } private openPhoto(): Promise<Array<string>> { return new Promise<Array<string>>((resolve, reject)=>{ let PhotoSelectOptions = new picker.PhotoSelectOptions(); PhotoSelectOptions.MIMEType = picker.PhotoViewMIMETypes.IMAGE_TYPE; PhotoSelectOptions.maxSelectNumber = 2; let photoPicker = new picker.PhotoViewPicker(); photoPicker.select(PhotoSelectOptions).then((PhotoSelectResult) => { resolve(PhotoSelectResult.photoUris) }).catch((err:BusinessError) => { hilog.error(0x0000, 'faceDetectorSample', `Failed to get photo image uri. code:${err.code},message:${err.message}`); reject(); }); }) } private loadImage(names: string[]) { setTimeout(async () => { let imageSource: image.ImageSource | undefined = undefined; let fileSource = await fileIo.open(names[0], fileIo.OpenMode.READ_ONLY); imageSource = image.createImageSource(fileSource.fd); this.chooseImage = await imageSource.createPixelMap(); fileSource = await fileIo.open(names[1], fileIo.OpenMode.READ_ONLY); imageSource = image.createImageSource(fileSource.fd); this.chooseImage1 = await imageSource.createPixelMap(); }, 100 ) } }
以上就是本篇文章所带来的鸿蒙开发中一小部分技术讲解;想要学习完整的鸿蒙全栈技术。可以在结尾找我可全部拿到!
下面是鸿蒙的完整学习路线,展示如下:
除此之外,根据这个学习鸿蒙全栈学习路线,也附带一整套完整的学习【文档+视频】,内容包含如下:
内容包含了:(ArkTS、ArkUI、Stage模型、多端部署、分布式应用开发、音频、视频、WebGL、OpenHarmony多媒体技术、Napi组件、OpenHarmony内核、鸿蒙南向开发、鸿蒙项目实战)等技术知识点。帮助大家在学习鸿蒙路上快速成长!
为了避免大家在学习过程中产生更多的时间成本,对比我把以上内容全部放在了↓↓↓想要的可以自拿喔!谢谢大家观看!
Copyright © 2003-2013 www.wpsshop.cn 版权所有,并保留所有权利。