329 lines
13 KiB
Python
329 lines
13 KiB
Python
# -*- coding: utf-8 -*-
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"""
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Created on Mon Mar 4 18:28:47 2024
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@author: ym
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"""
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import cv2
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import numpy as np
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from scipy.spatial.distance import cdist
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from sklearn.decomposition import PCA
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from .dotracks import MoveState, Track
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class backTrack(Track):
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# boxes: [x1, y1, x2, y2, track_id, score, cls, frame_index, box_index]
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# 0, 1, 2, 3, 4, 5, 6, 7, 8
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def __init__(self, boxes, imgshape=(1024, 1280)):
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super().__init__(boxes, imgshape)
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'''该函数依赖项: self.cornpoints'''
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self.isCornpoint = self.isimgborder()
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'''该函数依赖项: self.isCornpoint，不能在父类中初始化'''
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self.trajfeature()
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'''静止点帧索引'''
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self.static_index = self.compute_static_fids()
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'''运动点帧索引(运动帧两端的静止帧索引)'''
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self.moving_index = self.compute_dynamic_fids()
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self.static_dynamic_fids = self.compute_static_dynamic_fids()
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'''该函数依赖项: self.cornpoints，定义 4 个商品位置变量：
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self.Cent_isIncart, self.LB_isIncart, self.RB_isIncart
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self.posState = self.Cent_isIncart+self.LB_isIncart+self.RB_isIncart'''
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self.PositionState()
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'''self.feature_ious = (incart_iou, outcart_iou, cartboarder_iou, maxbox_iou, minbox_iou)
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self.incartrates = incartrates'''
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self.compute_ious_feat()
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# self.PCA()
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def isimgborder(self, BoundPixel=10, BoundThresh=0.3):
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x1, y1 = self.cornpoints[:,2], self.cornpoints[:,3],
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x2, y2 = self.cornpoints[:,8], self.cornpoints[:,9]
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cont1 = sum(abs(x1)<BoundPixel) / self.frnum > BoundThresh
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cont2 = sum(abs(y1)<BoundPixel) / self.frnum > BoundThresh
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cont3 = sum(abs(x2-self.imgshape[0])<BoundPixel) / self.frnum > BoundThresh
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cont4 = sum(abs(y2-self.imgshape[1])<BoundPixel) / self.frnum > BoundThresh
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cont = cont1 or cont2 or cont3 or cont4
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isCornpoint = False
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if cont:
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isCornpoint = True
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return isCornpoint
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def PositionState(self, camerType="back"):
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'''
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camerType: back, 后置摄像头
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front, 前置摄像头
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'''
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if camerType=="front":
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incart = cv2.imread("./shopcart/cart_tempt/incart.png", cv2.IMREAD_GRAYSCALE)
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else:
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incart = cv2.imread("./shopcart/cart_tempt/incart_ftmp.png", cv2.IMREAD_GRAYSCALE)
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xc, yc = self.cornpoints[:,0].clip(0,self.imgshape[0]-1).astype(np.int64), self.cornpoints[:,1].clip(0,self.imgshape[1]-1).astype(np.int64)
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x1, y1 = self.cornpoints[:,6].clip(0,self.imgshape[0]-1).astype(np.int64), self.cornpoints[:,7].clip(0,self.imgshape[1]-1).astype(np.int64)
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x2, y2 = self.cornpoints[:,8].clip(0,self.imgshape[0]-1).astype(np.int64), self.cornpoints[:,9].clip(0,self.imgshape[1]-1).astype(np.int64)
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# print(self.tid)
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Cent_inCartnum = np.count_nonzero(incart[(yc, xc)])
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LB_inCartnum = np.count_nonzero(incart[(y1, x1)])
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RB_inCartnum = np.count_nonzero(incart[(y2, x2)])
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self.Cent_isIncart = False
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self.LB_isIncart = False
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self.RB_isIncart = False
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if Cent_inCartnum: self.Cent_isIncart = True
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if LB_inCartnum: self.LB_isIncart = True
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if RB_inCartnum: self.RB_isIncart = True
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self.posState = self.Cent_isIncart+self.LB_isIncart+self.RB_isIncart
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def PCA(self):
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self.pca = PCA()
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X = self.cornpoints[:, 0:2]
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self.pca.fit(X)
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def compute_ious_feat(self):
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'''输出：
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self.feature_ious = (incart_iou, outcart_iou, cartboarder_iou, maxbox_iou, minbox_iou)
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self.incartrates = incartrates，
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其中：
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boxes流：track中所有boxes形成的轨迹图，可分为三部分：incart, outcart, cartboarder
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incart_iou, outcart_iou, cartboarder_iou：各部分和 boxes流的 iou。
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incart_iou = 0，track在购物车外，
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outcart_iou = 0，track在购物车内，也可能是通过左下角、右下角置入购物车，
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maxbox_iou, minbox_iou：track中最大、最小 box 和boxes流的iou，二者差值越小，越接近 1，表明track的运动型越小。
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incartrates: 各box和incart的iou时序，由小变大，反应的是置入过程，由大变小，反应的是取出过程
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'''
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incart = cv2.imread("./shopcart/cart_tempt/incart.png", cv2.IMREAD_GRAYSCALE)
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outcart = cv2.imread("./shopcart/cart_tempt/outcart.png", cv2.IMREAD_GRAYSCALE)
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cartboarder = cv2.imread("./shopcart/cart_tempt/cartboarder.png", cv2.IMREAD_GRAYSCALE)
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incartrates = []
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temp = np.zeros(incart.shape, np.uint8)
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maxarea, minarea = 0, self.imgshape[0]*self.imgshape[1]
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for i in range(self.frnum):
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# x, y, w, h = self.boxes[i, 0:4]
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x = (self.boxes[i, 2] + self.boxes[i, 0]) / 2
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w = (self.boxes[i, 2] - self.boxes[i, 0]) / 2
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y = (self.boxes[i, 3] + self.boxes[i, 1]) / 2
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h = (self.boxes[i, 3] - self.boxes[i, 1]) / 2
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if w*h > maxarea: maxarea = w*h
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if w*h < minarea: minarea = w*h
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cv2.rectangle(temp, (int(x-w/2), int(y-h/2)), (int(x+w/2), int(y+h/2)), 255, cv2.FILLED)
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temp1 = np.zeros(incart.shape, np.uint8)
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cv2.rectangle(temp1, (int(x-w/2), int(y-h/2)), (int(x+w/2), int(y+h/2)), 255, cv2.FILLED)
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temp2 = cv2.bitwise_and(incart, temp1)
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inrate = cv2.countNonZero(temp1)/(w*h)
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incartrates.append(inrate)
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isincart = cv2.bitwise_and(incart, temp)
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isoutcart = cv2.bitwise_and(outcart, temp)
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iscartboarder = cv2.bitwise_and(cartboarder, temp)
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num_temp = cv2.countNonZero(temp)
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num_incart = cv2.countNonZero(isincart)
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num_outcart = cv2.countNonZero(isoutcart)
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num_cartboarder = cv2.countNonZero(iscartboarder)
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incart_iou = num_incart/num_temp
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outcart_iou = num_outcart/num_temp
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cartboarder_iou = num_cartboarder/num_temp
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maxbox_iou = maxarea/num_temp
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minbox_iou = minarea/num_temp
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self.feature_ious = (incart_iou, outcart_iou, cartboarder_iou, maxbox_iou, minbox_iou)
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self.incartrates = incartrates
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def compute_static_fids(self, thresh1 = 12, thresh2 = 3):
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'''
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计算 track 的轨迹中相对处于静止状态的轨迹点的（start_frame_id, end_frame_id）
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thresh1: 相邻两帧目标中心点是否静止的的阈值，以像素为单位，
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thresh2: 连续捕捉到目标处于静止状态的帧数,当 thresh2 = 3时,至少连续 4个点,
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产生3个相邻点差值均小于 thresh1 时，判定为连续静止.
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处理过程中利用了插值技术，因此start、end并非 self.boxes 中对应的帧索引
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'''
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BoundPixel = 8
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x1, y1 = self.cornpoints[:,2], self.cornpoints[:,3],
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x2, y2 = self.cornpoints[:,8], self.cornpoints[:,9]
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cont1 = sum(abs(x1)<BoundPixel) > 3
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# cont2 = sum(abs(y1)<BoundPixel) > 3
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cont3 = sum(abs(x2-self.imgshape[0])<BoundPixel) > 3
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# cont4 = sum(abs(y2-self.imgshape[1])<BoundPixel) > 3
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cont = not(cont1 or cont3)
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## ============== 下一步，启用中心点，选择具有最小运动幅度的角点作为参考点
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static_index = []
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if self.frnum>=2 and cont:
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x1 = self.boxes[1:,7]
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x2 = [i for i in range(int(min(x1)), int(max(x1)+1))]
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dist_adjc = np.interp(x2, x1, self.trajmin)
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# dist_adjc = self.trajmin
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static_thresh = (dist_adjc < thresh1)[:, None].astype(np.uint8)
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static_cnts, _ = cv2.findContours(static_thresh, cv2.RETR_LIST, cv2.CHAIN_APPROX_NONE)
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for cnt in static_cnts:
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_, start, _, num = cv2.boundingRect(cnt)
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end = start + num
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if num < thresh2:
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continue
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static_index.append((start, end))
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static_index = np.array(static_index)
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if static_index.size:
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indx = np.argsort(static_index[:, 0])
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static_index = static_index[indx]
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return static_index
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def compute_dynamic_fids(self, thresh1 = 12, thresh2 = 3):
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'''
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计算 track 的轨迹中运动轨迹点的（start_frame_id, end_frame_id）
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thresh1: 相邻两帧目标中心点是否运动的阈值，以像素为单位，
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thresh2: 连续捕捉到目标连续运动的帧数
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目标：
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1. 计算轨迹方向
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2. 计算和手部运动的关联性
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'''
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moving_index = []
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if self.frnum>=2:
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x1 = self.boxes[1:,7]
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x2 = [i for i in range(int(min(x1)), int(max(x1)+1))]
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dist_adjc = np.interp(x2, x1, self.trajmin)
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moving_thresh = (dist_adjc >= thresh1)[:, None].astype(np.uint8)
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moving_cnts, _ = cv2.findContours(moving_thresh, cv2.RETR_LIST, cv2.CHAIN_APPROX_NONE)
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for cnt in moving_cnts:
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_, start, _, num = cv2.boundingRect(cnt)
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if num < thresh2:
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continue
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end = start + num
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moving_index.append((start, end))
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# =============================================================================
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# '''========= 输出帧id，不太合适 ========='''
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# moving_fids = []
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# for i in range(len(moving_index)):
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# i1, i2 = moving_index[i]
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# fid1, fid2 = boxes[i1, 7], boxes[i2, 7]
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# moving_fids.append([fid1, fid2])
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# moving_fids = np.array(moving_fids)
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# =============================================================================
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moving_index = np.array(moving_index)
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if moving_index.size:
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indx = np.argsort(moving_index[:, 0])
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moving_index = moving_index[indx]
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return moving_index
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def compute_static_dynamic_fids(self):
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static_dynamic_fids = []
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for traj in self.trajectory:
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static, dynamic = self.compute_static_fids(traj)
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static_dynamic_fids.append((static, dynamic))
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return static_dynamic_fids
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def is_static(self):
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'''静态情况 1: 目标关键点最小相对运动轨迹 < 0.2, 指标值偏大
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feature = [trajlen_min, trajlen_max,
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trajdist_min, trajdist_max,
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trajlen_rate, trajdist_rate]
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'''
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condt1 = self.feature[5] < 0.2 or self.feature[3] < 120
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'''静态情况 2: 目标初始状态为静止，适当放宽关键点最小相对运动轨迹 < 0.5'''
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condt2 = self.static_index.size > 0 \
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and self.static_index[0, 0] <= 2 \
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and self.feature[5] < 0.5
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'''静态情况 3: 目标初始状态和最终状态均为静止'''
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condt3 = self.static_index.shape[0] >= 2 \
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and self.static_index[0, 0] <= 2 \
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and self.static_index[-1, 1] >= self.frnum-3 \
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condt = condt1 or condt2 or condt3
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return condt
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# =============================================================================
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# track1 = [t for t in tracks if t.feature[5] < 0.2
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# or t.feature[3] < 120
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# ]
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#
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# track2 = [t for t in tracks if t.static_index.size > 0
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# and t.static_index[0, 0] <= 2
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# and t.feature[5] < 0.5]
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#
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# track3 = [t for t in tracks if t.static_index.shape[0] >= 2
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# and t.static_index[0, 0] <= 2
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# and t.static_index[-1, 1] >= t.frnum-3]
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#
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# track12 = self.join_tracks(track1, track2)
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#
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# '''提取静止状态的 track'''
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# static_tracks = self.join_tracks(track12, track3)
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# self.Static.extend(static_tracks)
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#
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# =============================================================================
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def is_OutTrack(self):
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if self.posState <= 1:
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isout = True
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else:
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isout = False
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return isout
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def compute_distance(self):
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pass
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def move_start_fid(self):
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pass
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def move_end_fid(self):
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pass |