实现basler进行抓拍显示

序

为了实现输入条码后，basler相机自动拍照

实现思路

就是简单的拍照，主要就是指定哪个相机拍照是个问题

代码实现

偷懒写了一个配置文件，直接从这里读取参数

GUIs

import os
import sqlite3
import tkinter as tk
from PIL import Image, ImageTk
from camera import getTime, getSavePath, getDate, cameraMain
from readTxts import readAll
# 取得输入框的值并清空输入框
def handle_enter(event):
text = entry.get()
print(text)
entry.delete(0, 'end')
img_show()
try:
sqlPath = readAll()[0][0]
connect = sqlite3.connect(sqlPath)
cur = connect.cursor()
cur.execute(
f'INSERT INTO THERE_SCAN (SCANTIME,ITEMCODE,SCANDATE) VALUES ("{getTime()}","{text}","{getDate()}")')
connect.commit()
cur.close()
connect.close()

except Exception as e:
print('Error：数据库错误')
print(e)
errorShow('数据库错误', 'red')

def load_img(index, item):
# 打开图片。
# resize()：示例图片太大，这里缩小一些。
img = Image.open(item).resize((400, 300))

引用：添加一个Label，用来存储图片。使用PanedWindow也行。

panel = tk.Label(master=window)
panel.photo = ImageTk.PhotoImage(img) # 将原本的变量photo改为panel.photo

图片用Label来显示，参数master改不改为panel都行，这里就不改了。

注意：参数image改为panel.photo

tk.Label(master=window, image=panel.photo).grid(row=1 + index // 2, column=index % 2)

tk.Label(master=window, image=panel.photo).place(x=100 + 800 * index // 2, y=50 + 800 * index % 2)

展示图片

def img_show():
try:
cameraMain()
paths = getSavePath() + '\' + getDate() + '\' + getTime() + '\'
image_files = [f for f in os.listdir(paths) if os.path.isfile(os.path.join(paths, f))]
img_list = []
for imgs in image_files:
img_list.append(imgs)

for index, item in enumerate(img_list):
load_img(index, paths + item) # 执行函数
errorShow('OK', 'green')

except Exception as e:
print(e)
errorShow('相机未连接，或者相机IP未配置正确,配置正确后请重试', 'red')

def errorShow(errors, color):
showTxt = getTime()+" : "+errors
showText.config(text=showTxt, bg=color)
showText.place(x=300, y=10)

if name == 'main':
window = tk.Tk()
# 设置弹出窗口的大小
window.geometry("1000x800")
# 设置左上角图标
window.iconphoto(False, tk.PhotoImage(file='anll.png'))
window.title("扫码过站照片采集")
# 添加一个标签和一个文本框
label = tk.Label(window, text="请输入条码：")
entry = tk.Entry(window)
Timeshow = tk.Label(window)
showText = tk.Label(window)
# label.grid(row=0, column=0)
# entry.grid(row=0, column=1)

label.place(x=10, y=10)
entry.place(x=100, y=10)
# 设置焦点
entry.focus_set()

按回车就输入值

entry.bind("", handle_enter)

进入事件循环

window.mainloop()

basler

from pypylon import pylon
import cv2

conecting to the first available camera

camera = pylon.InstantCamera(pylon.TlFactory.GetInstance().CreateFirstDevice())

def savePhoto(ip_address, saveFile):
info = pylon.DeviceInfo()
info.SetPropertyValue('IpAddress', ip_address)
camera = pylon.InstantCamera(pylon.TlFactory.GetInstance().CreateFirstDevice(info))
# camera = pylon.InstantCamera(pylon.TlFactory.GetInstance().CreateFirstDevice())
# Grabing Continusely (video) with minimal delay
camera.StartGrabbing(pylon.GrabStrategy_LatestImageOnly)
converter = pylon.ImageFormatConverter()
# converting to opencv bgr format
converter.OutputPixelFormat = pylon.PixelType_BGR8packed
converter.OutputBitAlignment = pylon.OutputBitAlignment_MsbAligned

grabResult = camera.RetrieveResult(1000, pylon.TimeoutHandling_ThrowException)
if grabResult.GrabSucceeded():
# Access the image data
image = converter.Convert(grabResult)
img = image.GetArray()
# cv2.namedWindow('title', cv2.WINDOW_NORMAL)
# cv2.imshow('title', img)
# cv2.imwrite(r'F:\Desktop\1\123.jpg', img)
cv2.imencode('.jpg', img)[1].tofile(saveFile)
grabResult.Release()
# Releasing the resource
camera.StopGrabbing()
cv2.destroyAllWindows()

camera

!/usr/bin/env python

coding=utf-8

import datetime
import os

import cv2 as cv

from basler import savePhoto
from readTxts import readAll

now = datetime.datetime.now()

格式化日期和时间

formatted_date = now.strftime("%Y%m%d")
formatted_time = now.strftime("%H%M%S")
SavePath = readAll()[1][0]

def getSavePath():
return SavePath

def setTime():
global now
now = datetime.datetime.now()
global formatted_date
formatted_date = now.strftime("%Y-%m-%d")
global formatted_time
formatted_time = now.strftime("%Hh%Mm%Ss")

def getDate():
return formatted_date

def getTime():
return formatted_time

路径不存在就生成

def fileOrNone(File_Path):
if not os.path.exists(File_Path):
os.makedirs(File_Path)

本机拍照保存

def show_in_cv(camera_id):
# 获取当前日期和时间
setTime()
DayPaths = SavePath + '\' + f'{formatted_date}'
fileOrNone(DayPaths)
datePaths = DayPaths + '\' + f'{formatted_time}'
fileOrNone(datePaths)

本机拍照代码

cap = cv.VideoCapture(camera_id, cv.CAP_DSHOW)
# cap.set(cv.CAP_PROP_FRAME_WIDTH, 960)
# cap.set(cv.CAP_PROP_FRAME_HEIGHT, 540)
# cap.set(cv.CAP_PROP_FPS, 30)
suc, frame = cap.read()

纯英文路径保存方法

cv.imwrite(f'{datePaths}{camera_id}.jpg', frame)

中文路径保存方法

cv.imencode('.jpg', frame)[1].tofile(f'{datePaths}'+'\'+f'{camera_id}.jpg')
# 弹窗展示功能
# cv.imshow("preview camera", frame)
# cv.waitKey(30)

def cameraMain():
# cameras = list_video_devices()
# print(f'\n\n=\ncamera_list: {cameras}')
# print(cameras)
# idx = 1
# camera_id = cameras[idx][0]
# camera_name = cameras[idx][1]
# print(f'\n\n=\npreview camera: camera_id={camera_id} camera_name={camera_name}')
# show_in_cv(camera_id)

cameras = list_video_devices()

print(cameras)

for idx in cameras:

camera_id = idx[0]

camera_name = idx[1]

print(camera_name)

show_in_cv(camera_id)

setTime()
DayPaths = SavePath + '\' + f'{formatted_date}'
fileOrNone(DayPaths)
datePaths = DayPaths + '\' + f'{formatted_time}'
fileOrNone(datePaths)

ip_address = readAll()[3][0]
ipList = ip_address.split(',')
for index, ip in enumerate(ipList):
cameras = ip
print(ip)
saveFilePhoto = f'{datePaths}' + '\' + f'{index}.jpg'
savePhoto(cameras, saveFilePhoto)

readTxts

def listToStr(strList):
strs = ""
if len(strList) > 0:
for i in strList:
strs = strs + i
if i != strList[-1]:
strs = strs + "\"
return strs

读取同一行文字的时候

def sameLine(txt_Path, needWord):
with open(txt_Path, encoding='utf-8') as file:
words = needWord
returnWord = []
for line in file.readlines():
if line.strip().startswith(words):
returnWord.append(line.strip().replace(words, ""))
if len(returnWord) == 0:
returnWord.append("无")
return returnWord

def readAll():
try:
txt_Path = r'F:\Desktop\3期摄像头扫码拍照留像\扫码过站照片采集配置.txt'
result_list = [sameLine(txt_Path, "数据库保存路径="), sameLine(txt_Path, "照片保存总路径="),
sameLine(txt_Path, "默认图片文件夹路径="), sameLine(txt_Path, "相机IP=")]

return result_list

except Exception as e:
print("Error:0 文件读取错误")
print(e)

if name == 'main':
print(readAll())