百度网站推广一年多少钱,定制软件开发公司,品牌营销案例,设计上海门票在前文的项目开发实践中#xff0c;我们已经以钢铁产业产品缺陷检测数据场景为基准#xff0c;陆续开发构建了多款目标检测模型#xff0c;感兴趣的话可以自行阅读即可。
《YOLOv3老矣尚能战否#xff1f;基于YOLOv3开发构建建钢铁产业产品智能自动化检测识别系统#xf…在前文的项目开发实践中我们已经以钢铁产业产品缺陷检测数据场景为基准陆续开发构建了多款目标检测模型感兴趣的话可以自行阅读即可。
《YOLOv3老矣尚能战否基于YOLOv3开发构建建钢铁产业产品智能自动化检测识别系统我们来与YOLOv5进行全方位对比评测》
《基于官方YOLOv4开发构建目标检测模型超详细实战教程【以自建缺陷检测数据集为例】》
《基于官方YOLOv4-u5【yolov5风格实现】开发构建目标检测模型超详细实战教程【以自建缺陷检测数据集为例】》
《I助力钢铁产业数字化python基于YOLOv5开发构建钢铁产业产品智能自动化检测识别系统》
《python基于YOLOv6最新0.4.1分支开发构建钢铁产业产品智能自动化检测识别系统》
《python基于DETR(DEtection TRansformer)开发构建钢铁产业产品智能自动化检测识别系统》
本文的主要目的就是延续这一业务场景的模型开发基于yolov7来开发构建不同参数量级的钢铁产品智能化质检系统首先来看实例效果 本文主要选择了yolov7-tiny、yolov7和yolov7x三款不同参数量级的模型来开发我们所需要的目标检测系统。
简单看下数据集如下所示 共包含十种不同类型的产品缺陷。
训练数据配置文件如下所示
# txt path
train: ./dataset/images/train
val: ./dataset/images/test
test: ./dataset/images/test# number of classes
nc: 10# class names
names: [chongkong, hanfeng, yueyawan, shuiban, youban, siban, yiwu, yahen, zhehen, yaozhe]
yolov7-tiny.yaml如下所示
# parameters
nc: 10 # number of classes
depth_multiple: 1.0 # model depth multiple
width_multiple: 1.0 # layer channel multiple# anchors
anchors:- [10,13, 16,30, 33,23] # P3/8- [30,61, 62,45, 59,119] # P4/16- [116,90, 156,198, 373,326] # P5/32# yolov7-tiny backbone
backbone:# [from, number, module, args] c2, k1, s1, pNone, g1, actTrue[[-1, 1, Conv, [32, 3, 2, None, 1, nn.LeakyReLU(0.1)]], # 0-P1/2 [-1, 1, Conv, [64, 3, 2, None, 1, nn.LeakyReLU(0.1)]], # 1-P2/4 [-1, 1, Conv, [32, 1, 1, None, 1, nn.LeakyReLU(0.1)]],[-2, 1, Conv, [32, 1, 1, None, 1, nn.LeakyReLU(0.1)]],[-1, 1, Conv, [32, 3, 1, None, 1, nn.LeakyReLU(0.1)]],[-1, 1, Conv, [32, 3, 1, None, 1, nn.LeakyReLU(0.1)]],[[-1, -2, -3, -4], 1, Concat, [1]],[-1, 1, Conv, [64, 1, 1, None, 1, nn.LeakyReLU(0.1)]], # 7[-1, 1, MP, []], # 8-P3/8[-1, 1, Conv, [64, 1, 1, None, 1, nn.LeakyReLU(0.1)]],[-2, 1, Conv, [64, 1, 1, None, 1, nn.LeakyReLU(0.1)]],[-1, 1, Conv, [64, 3, 1, None, 1, nn.LeakyReLU(0.1)]],[-1, 1, Conv, [64, 3, 1, None, 1, nn.LeakyReLU(0.1)]],[[-1, -2, -3, -4], 1, Concat, [1]],[-1, 1, Conv, [128, 1, 1, None, 1, nn.LeakyReLU(0.1)]], # 14[-1, 1, MP, []], # 15-P4/16[-1, 1, Conv, [128, 1, 1, None, 1, nn.LeakyReLU(0.1)]],[-2, 1, Conv, [128, 1, 1, None, 1, nn.LeakyReLU(0.1)]],[-1, 1, Conv, [128, 3, 1, None, 1, nn.LeakyReLU(0.1)]],[-1, 1, Conv, [128, 3, 1, None, 1, nn.LeakyReLU(0.1)]],[[-1, -2, -3, -4], 1, Concat, [1]],[-1, 1, Conv, [256, 1, 1, None, 1, nn.LeakyReLU(0.1)]], # 21[-1, 1, MP, []], # 22-P5/32[-1, 1, Conv, [256, 1, 1, None, 1, nn.LeakyReLU(0.1)]],[-2, 1, Conv, [256, 1, 1, None, 1, nn.LeakyReLU(0.1)]],[-1, 1, Conv, [256, 3, 1, None, 1, nn.LeakyReLU(0.1)]],[-1, 1, Conv, [256, 3, 1, None, 1, nn.LeakyReLU(0.1)]],[[-1, -2, -3, -4], 1, Concat, [1]],[-1, 1, Conv, [512, 1, 1, None, 1, nn.LeakyReLU(0.1)]], # 28]# yolov7-tiny head
head:[[-1, 1, Conv, [256, 1, 1, None, 1, nn.LeakyReLU(0.1)]],[-2, 1, Conv, [256, 1, 1, None, 1, nn.LeakyReLU(0.1)]],[-1, 1, SP, [5]],[-2, 1, SP, [9]],[-3, 1, SP, [13]],[[-1, -2, -3, -4], 1, Concat, [1]],[-1, 1, Conv, [256, 1, 1, None, 1, nn.LeakyReLU(0.1)]],[[-1, -7], 1, Concat, [1]],[-1, 1, Conv, [256, 1, 1, None, 1, nn.LeakyReLU(0.1)]], # 37[-1, 1, Conv, [128, 1, 1, None, 1, nn.LeakyReLU(0.1)]],[-1, 1, nn.Upsample, [None, 2, nearest]],[21, 1, Conv, [128, 1, 1, None, 1, nn.LeakyReLU(0.1)]], # route backbone P4[[-1, -2], 1, Concat, [1]],[-1, 1, Conv, [64, 1, 1, None, 1, nn.LeakyReLU(0.1)]],[-2, 1, Conv, [64, 1, 1, None, 1, nn.LeakyReLU(0.1)]],[-1, 1, Conv, [64, 3, 1, None, 1, nn.LeakyReLU(0.1)]],[-1, 1, Conv, [64, 3, 1, None, 1, nn.LeakyReLU(0.1)]],[[-1, -2, -3, -4], 1, Concat, [1]],[-1, 1, Conv, [128, 1, 1, None, 1, nn.LeakyReLU(0.1)]], # 47[-1, 1, Conv, [64, 1, 1, None, 1, nn.LeakyReLU(0.1)]],[-1, 1, nn.Upsample, [None, 2, nearest]],[14, 1, Conv, [64, 1, 1, None, 1, nn.LeakyReLU(0.1)]], # route backbone P3[[-1, -2], 1, Concat, [1]],[-1, 1, Conv, [32, 1, 1, None, 1, nn.LeakyReLU(0.1)]],[-2, 1, Conv, [32, 1, 1, None, 1, nn.LeakyReLU(0.1)]],[-1, 1, Conv, [32, 3, 1, None, 1, nn.LeakyReLU(0.1)]],[-1, 1, Conv, [32, 3, 1, None, 1, nn.LeakyReLU(0.1)]],[[-1, -2, -3, -4], 1, Concat, [1]],[-1, 1, Conv, [64, 1, 1, None, 1, nn.LeakyReLU(0.1)]], # 57[-1, 1, Conv, [128, 3, 2, None, 1, nn.LeakyReLU(0.1)]],[[-1, 47], 1, Concat, [1]],[-1, 1, Conv, [64, 1, 1, None, 1, nn.LeakyReLU(0.1)]],[-2, 1, Conv, [64, 1, 1, None, 1, nn.LeakyReLU(0.1)]],[-1, 1, Conv, [64, 3, 1, None, 1, nn.LeakyReLU(0.1)]],[-1, 1, Conv, [64, 3, 1, None, 1, nn.LeakyReLU(0.1)]],[[-1, -2, -3, -4], 1, Concat, [1]],[-1, 1, Conv, [128, 1, 1, None, 1, nn.LeakyReLU(0.1)]], # 65[-1, 1, Conv, [256, 3, 2, None, 1, nn.LeakyReLU(0.1)]],[[-1, 37], 1, Concat, [1]],[-1, 1, Conv, [128, 1, 1, None, 1, nn.LeakyReLU(0.1)]],[-2, 1, Conv, [128, 1, 1, None, 1, nn.LeakyReLU(0.1)]],[-1, 1, Conv, [128, 3, 1, None, 1, nn.LeakyReLU(0.1)]],[-1, 1, Conv, [128, 3, 1, None, 1, nn.LeakyReLU(0.1)]],[[-1, -2, -3, -4], 1, Concat, [1]],[-1, 1, Conv, [256, 1, 1, None, 1, nn.LeakyReLU(0.1)]], # 73[57, 1, Conv, [128, 3, 1, None, 1, nn.LeakyReLU(0.1)]],[65, 1, Conv, [256, 3, 1, None, 1, nn.LeakyReLU(0.1)]],[73, 1, Conv, [512, 3, 1, None, 1, nn.LeakyReLU(0.1)]],[[74,75,76], 1, IDetect, [nc, anchors]], # Detect(P3, P4, P5)]yolov7.yaml如下所示
# parameters
nc: 10 # number of classes
depth_multiple: 1.0 # model depth multiple
width_multiple: 1.0 # layer channel multiple# anchors
anchors:- [12,16, 19,36, 40,28] # P3/8- [36,75, 76,55, 72,146] # P4/16- [142,110, 192,243, 459,401] # P5/32# yolov7 backbone
backbone:# [from, number, module, args][[-1, 1, Conv, [32, 3, 1]], # 0[-1, 1, Conv, [64, 3, 2]], # 1-P1/2 [-1, 1, Conv, [64, 3, 1]],[-1, 1, Conv, [128, 3, 2]], # 3-P2/4 [-1, 1, Conv, [64, 1, 1]],[-2, 1, Conv, [64, 1, 1]],[-1, 1, Conv, [64, 3, 1]],[-1, 1, Conv, [64, 3, 1]],[-1, 1, Conv, [64, 3, 1]],[-1, 1, Conv, [64, 3, 1]],[[-1, -3, -5, -6], 1, Concat, [1]],[-1, 1, Conv, [256, 1, 1]], # 11[-1, 1, MP, []],[-1, 1, Conv, [128, 1, 1]],[-3, 1, Conv, [128, 1, 1]],[-1, 1, Conv, [128, 3, 2]],[[-1, -3], 1, Concat, [1]], # 16-P3/8 [-1, 1, Conv, [128, 1, 1]],[-2, 1, Conv, [128, 1, 1]],[-1, 1, Conv, [128, 3, 1]],[-1, 1, Conv, [128, 3, 1]],[-1, 1, Conv, [128, 3, 1]],[-1, 1, Conv, [128, 3, 1]],[[-1, -3, -5, -6], 1, Concat, [1]],[-1, 1, Conv, [512, 1, 1]], # 24[-1, 1, MP, []],[-1, 1, Conv, [256, 1, 1]],[-3, 1, Conv, [256, 1, 1]],[-1, 1, Conv, [256, 3, 2]],[[-1, -3], 1, Concat, [1]], # 29-P4/16 [-1, 1, Conv, [256, 1, 1]],[-2, 1, Conv, [256, 1, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[[-1, -3, -5, -6], 1, Concat, [1]],[-1, 1, Conv, [1024, 1, 1]], # 37[-1, 1, MP, []],[-1, 1, Conv, [512, 1, 1]],[-3, 1, Conv, [512, 1, 1]],[-1, 1, Conv, [512, 3, 2]],[[-1, -3], 1, Concat, [1]], # 42-P5/32 [-1, 1, Conv, [256, 1, 1]],[-2, 1, Conv, [256, 1, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[[-1, -3, -5, -6], 1, Concat, [1]],[-1, 1, Conv, [1024, 1, 1]], # 50]# yolov7 head
head:[[-1, 1, SPPCSPC, [512]], # 51[-1, 1, Conv, [256, 1, 1]],[-1, 1, nn.Upsample, [None, 2, nearest]],[37, 1, Conv, [256, 1, 1]], # route backbone P4[[-1, -2], 1, Concat, [1]],[-1, 1, Conv, [256, 1, 1]],[-2, 1, Conv, [256, 1, 1]],[-1, 1, Conv, [128, 3, 1]],[-1, 1, Conv, [128, 3, 1]],[-1, 1, Conv, [128, 3, 1]],[-1, 1, Conv, [128, 3, 1]],[[-1, -2, -3, -4, -5, -6], 1, Concat, [1]],[-1, 1, Conv, [256, 1, 1]], # 63[-1, 1, Conv, [128, 1, 1]],[-1, 1, nn.Upsample, [None, 2, nearest]],[24, 1, Conv, [128, 1, 1]], # route backbone P3[[-1, -2], 1, Concat, [1]],[-1, 1, Conv, [128, 1, 1]],[-2, 1, Conv, [128, 1, 1]],[-1, 1, Conv, [64, 3, 1]],[-1, 1, Conv, [64, 3, 1]],[-1, 1, Conv, [64, 3, 1]],[-1, 1, Conv, [64, 3, 1]],[[-1, -2, -3, -4, -5, -6], 1, Concat, [1]],[-1, 1, Conv, [128, 1, 1]], # 75[-1, 1, MP, []],[-1, 1, Conv, [128, 1, 1]],[-3, 1, Conv, [128, 1, 1]],[-1, 1, Conv, [128, 3, 2]],[[-1, -3, 63], 1, Concat, [1]],[-1, 1, Conv, [256, 1, 1]],[-2, 1, Conv, [256, 1, 1]],[-1, 1, Conv, [128, 3, 1]],[-1, 1, Conv, [128, 3, 1]],[-1, 1, Conv, [128, 3, 1]],[-1, 1, Conv, [128, 3, 1]],[[-1, -2, -3, -4, -5, -6], 1, Concat, [1]],[-1, 1, Conv, [256, 1, 1]], # 88[-1, 1, MP, []],[-1, 1, Conv, [256, 1, 1]],[-3, 1, Conv, [256, 1, 1]],[-1, 1, Conv, [256, 3, 2]],[[-1, -3, 51], 1, Concat, [1]],[-1, 1, Conv, [512, 1, 1]],[-2, 1, Conv, [512, 1, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[[-1, -2, -3, -4, -5, -6], 1, Concat, [1]],[-1, 1, Conv, [512, 1, 1]], # 101[75, 1, RepConv, [256, 3, 1]],[88, 1, RepConv, [512, 3, 1]],[101, 1, RepConv, [1024, 3, 1]],[[102,103,104], 1, IDetect, [nc, anchors]], # Detect(P3, P4, P5)]yolov7x.yaml如下所示
# parameters
nc: 10 # number of classes
depth_multiple: 1.0 # model depth multiple
width_multiple: 1.0 # layer channel multiple# anchors
anchors:- [12,16, 19,36, 40,28] # P3/8- [36,75, 76,55, 72,146] # P4/16- [142,110, 192,243, 459,401] # P5/32# yolov7 backbone
backbone:# [from, number, module, args][[-1, 1, Conv, [40, 3, 1]], # 0[-1, 1, Conv, [80, 3, 2]], # 1-P1/2 [-1, 1, Conv, [80, 3, 1]],[-1, 1, Conv, [160, 3, 2]], # 3-P2/4 [-1, 1, Conv, [64, 1, 1]],[-2, 1, Conv, [64, 1, 1]],[-1, 1, Conv, [64, 3, 1]],[-1, 1, Conv, [64, 3, 1]],[-1, 1, Conv, [64, 3, 1]],[-1, 1, Conv, [64, 3, 1]],[-1, 1, Conv, [64, 3, 1]],[-1, 1, Conv, [64, 3, 1]],[[-1, -3, -5, -7, -8], 1, Concat, [1]],[-1, 1, Conv, [320, 1, 1]], # 13[-1, 1, MP, []],[-1, 1, Conv, [160, 1, 1]],[-3, 1, Conv, [160, 1, 1]],[-1, 1, Conv, [160, 3, 2]],[[-1, -3], 1, Concat, [1]], # 18-P3/8 [-1, 1, Conv, [128, 1, 1]],[-2, 1, Conv, [128, 1, 1]],[-1, 1, Conv, [128, 3, 1]],[-1, 1, Conv, [128, 3, 1]],[-1, 1, Conv, [128, 3, 1]],[-1, 1, Conv, [128, 3, 1]],[-1, 1, Conv, [128, 3, 1]],[-1, 1, Conv, [128, 3, 1]],[[-1, -3, -5, -7, -8], 1, Concat, [1]],[-1, 1, Conv, [640, 1, 1]], # 28[-1, 1, MP, []],[-1, 1, Conv, [320, 1, 1]],[-3, 1, Conv, [320, 1, 1]],[-1, 1, Conv, [320, 3, 2]],[[-1, -3], 1, Concat, [1]], # 33-P4/16 [-1, 1, Conv, [256, 1, 1]],[-2, 1, Conv, [256, 1, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[[-1, -3, -5, -7, -8], 1, Concat, [1]],[-1, 1, Conv, [1280, 1, 1]], # 43[-1, 1, MP, []],[-1, 1, Conv, [640, 1, 1]],[-3, 1, Conv, [640, 1, 1]],[-1, 1, Conv, [640, 3, 2]],[[-1, -3], 1, Concat, [1]], # 48-P5/32 [-1, 1, Conv, [256, 1, 1]],[-2, 1, Conv, [256, 1, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[[-1, -3, -5, -7, -8], 1, Concat, [1]],[-1, 1, Conv, [1280, 1, 1]], # 58]# yolov7 head
head:[[-1, 1, SPPCSPC, [640]], # 59[-1, 1, Conv, [320, 1, 1]],[-1, 1, nn.Upsample, [None, 2, nearest]],[43, 1, Conv, [320, 1, 1]], # route backbone P4[[-1, -2], 1, Concat, [1]],[-1, 1, Conv, [256, 1, 1]],[-2, 1, Conv, [256, 1, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[[-1, -3, -5, -7, -8], 1, Concat, [1]],[-1, 1, Conv, [320, 1, 1]], # 73[-1, 1, Conv, [160, 1, 1]],[-1, 1, nn.Upsample, [None, 2, nearest]],[28, 1, Conv, [160, 1, 1]], # route backbone P3[[-1, -2], 1, Concat, [1]],[-1, 1, Conv, [128, 1, 1]],[-2, 1, Conv, [128, 1, 1]],[-1, 1, Conv, [128, 3, 1]],[-1, 1, Conv, [128, 3, 1]],[-1, 1, Conv, [128, 3, 1]],[-1, 1, Conv, [128, 3, 1]],[-1, 1, Conv, [128, 3, 1]],[-1, 1, Conv, [128, 3, 1]],[[-1, -3, -5, -7, -8], 1, Concat, [1]],[-1, 1, Conv, [160, 1, 1]], # 87[-1, 1, MP, []],[-1, 1, Conv, [160, 1, 1]],[-3, 1, Conv, [160, 1, 1]],[-1, 1, Conv, [160, 3, 2]],[[-1, -3, 73], 1, Concat, [1]],[-1, 1, Conv, [256, 1, 1]],[-2, 1, Conv, [256, 1, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[-1, 1, Conv, [256, 3, 1]],[[-1, -3, -5, -7, -8], 1, Concat, [1]],[-1, 1, Conv, [320, 1, 1]], # 102[-1, 1, MP, []],[-1, 1, Conv, [320, 1, 1]],[-3, 1, Conv, [320, 1, 1]],[-1, 1, Conv, [320, 3, 2]],[[-1, -3, 59], 1, Concat, [1]],[-1, 1, Conv, [512, 1, 1]],[-2, 1, Conv, [512, 1, 1]],[-1, 1, Conv, [512, 3, 1]],[-1, 1, Conv, [512, 3, 1]],[-1, 1, Conv, [512, 3, 1]],[-1, 1, Conv, [512, 3, 1]],[-1, 1, Conv, [512, 3, 1]],[-1, 1, Conv, [512, 3, 1]],[[-1, -3, -5, -7, -8], 1, Concat, [1]],[-1, 1, Conv, [640, 1, 1]], # 117[87, 1, Conv, [320, 3, 1]],[102, 1, Conv, [640, 3, 1]],[117, 1, Conv, [1280, 3, 1]],[[118,119,120], 1, IDetect, [nc, anchors]], # Detect(P3, P4, P5)]默认完全相同的训练参数开始模型的训练。
训练完成后我们来对三款模型进行对比评估可视化如下所示 【Precision曲线】 精确率曲线Precision-Recall Curve是一种用于评估二分类模型在不同阈值下的精确率性能的可视化工具。它通过绘制不同阈值下的精确率和召回率之间的关系图来帮助我们了解模型在不同阈值下的表现。 精确率Precision是指被正确预测为正例的样本数占所有预测为正例的样本数的比例。召回率Recall是指被正确预测为正例的样本数占所有实际为正例的样本数的比例。 绘制精确率曲线的步骤如下 使用不同的阈值将预测概率转换为二进制类别标签。通常当预测概率大于阈值时样本被分类为正例否则分类为负例。 对于每个阈值计算相应的精确率和召回率。 将每个阈值下的精确率和召回率绘制在同一个图表上形成精确率曲线。 根据精确率曲线的形状和变化趋势可以选择适当的阈值以达到所需的性能要求。 通过观察精确率曲线我们可以根据需求确定最佳的阈值以平衡精确率和召回率。较高的精确率意味着较少的误报而较高的召回率则表示较少的漏报。根据具体的业务需求和成本权衡可以在曲线上选择合适的操作点或阈值。 精确率曲线通常与召回率曲线Recall Curve一起使用以提供更全面的分类器性能分析并帮助评估和比较不同模型的性能。 【Recall曲线】 召回率曲线Recall Curve是一种用于评估二分类模型在不同阈值下的召回率性能的可视化工具。它通过绘制不同阈值下的召回率和对应的精确率之间的关系图来帮助我们了解模型在不同阈值下的表现。 召回率Recall是指被正确预测为正例的样本数占所有实际为正例的样本数的比例。召回率也被称为灵敏度Sensitivity或真正例率True Positive Rate。 绘制召回率曲线的步骤如下 使用不同的阈值将预测概率转换为二进制类别标签。通常当预测概率大于阈值时样本被分类为正例否则分类为负例。 对于每个阈值计算相应的召回率和对应的精确率。 将每个阈值下的召回率和精确率绘制在同一个图表上形成召回率曲线。 根据召回率曲线的形状和变化趋势可以选择适当的阈值以达到所需的性能要求。 通过观察召回率曲线我们可以根据需求确定最佳的阈值以平衡召回率和精确率。较高的召回率表示较少的漏报而较高的精确率意味着较少的误报。根据具体的业务需求和成本权衡可以在曲线上选择合适的操作点或阈值。 召回率曲线通常与精确率曲线Precision Curve一起使用以提供更全面的分类器性能分析并帮助评估和比较不同模型的性能。 【F1值曲线】 F1值曲线是一种用于评估二分类模型在不同阈值下的性能的可视化工具。它通过绘制不同阈值下的精确率Precision、召回率Recall和F1分数的关系图来帮助我们理解模型的整体性能。 F1分数是精确率和召回率的调和平均值它综合考虑了两者的性能指标。F1值曲线可以帮助我们确定在不同精确率和召回率之间找到一个平衡点以选择最佳的阈值。 绘制F1值曲线的步骤如下 使用不同的阈值将预测概率转换为二进制类别标签。通常当预测概率大于阈值时样本被分类为正例否则分类为负例。 对于每个阈值计算相应的精确率、召回率和F1分数。 将每个阈值下的精确率、召回率和F1分数绘制在同一个图表上形成F1值曲线。 根据F1值曲线的形状和变化趋势可以选择适当的阈值以达到所需的性能要求。 F1值曲线通常与接收者操作特征曲线ROC曲线一起使用以帮助评估和比较不同模型的性能。它们提供了更全面的分类器性能分析可以根据具体应用场景来选择合适的模型和阈值设置。 直观来看三款模型没有特别大的差异yolov7整体性能接近于yolov7x在实际使用的时候可以优先考虑。如果算力首先可以直接使用tiny版本的模型也是可以的。
可视化推理实例如下所示 能够同时满足图像推理计算和视频推理计算。
