工业相机设计图像处理和方案实现
Posted
tags:
篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了工业相机设计图像处理和方案实现相关的知识，希望对你有一定的参考价值。
最近在学习工业相机相关知识，需求是这样的：800 X 600的图像大小、40FPS、灰度图、BMP输出格式、20倍定焦镜头。由于刚接触这个，有许多不懂的，现向各位大神请教几个问题。1、我选用的单色SENSOR，输出灰度图需要做图像较正吗？ 2、我采用的定焦镜头拍运动的物体，需要做3A算法吗？ 3、ISP芯片+SENSOR的方案和FPGA + SENSOR的方案，那种更靠谱。还请各位大神不吝赐教，非常感谢！！
具体看图像处理的要求和想实现什么样的方案，详情可通过官方微信平台（微信公众号：RegemMarr Regem Marr 研祥金码），您可以第一时间掌握公司最新动态及各种行业资讯，也可以即时互动。同时您可以在线报修、查询网点、保修期等，快速获得专业服务。经常会有一些机器视觉工程师认为USB接口的工业相机会造成丢帧现象。一般而言，工业相机丢帧与工业相机所采用的传输接口是没有关系的，无论是USB，还是1394、GigE、或者是CameraLink。设计不良的驱动程序或工业相机硬件才是造成丢帧的真正原因：设计不良的工业相机之所以会发生丢帧的现象，其实就是资料通道的堵塞，无法及时处理，所以新的图像进来时，前一张可能被迫丢弃，或是新的图像被迫丢弃。要解决这问题，需要设计者针对驱动程序与工业相机硬件资料传输的每个环节进行精密的设计。想了解更多关于工业相机的内容，可通过官方网站（www.evocjm.com），可在线获取相关技术文件、工具、驱动及常见问答库，即时享受专业官方服务。您还可以通过在线沟通工具，直接发起对话申请，或提交留言，我们的客服人员将第一时间与您取得联系。 参考技术A 这个需要看客户的具体需求，每个客户所要求的是不一样的。工业相机会提供一些开发包，支持很多种语言的。我是做技术支持的，共同学习埃望采纳，有关工业相机的问题可以随时来问我。追问
谢谢大虾的回复！我现在打算用SONY IMX290 + HISI 3516AV200来做方案。我最担心的就是图像的曝光和3A算法还有畸变校正能不能符合最后图像识别的要求
参考技术B 嗯你是男是女你是开始上课看 参考技术C 是否可以接受别人意见建议？你是怎么回事！你在干嘛我也睡不着我不是滋味！你是谁呀、这种事情是因为他们没有什么事情可以做什么地方的经济呢！你的孩子都不一样吧！你在一起了么！你是谁了！你在干嘛呀！你们要吃的什么地方好玩好睡不好，不能再没有你想象不成事就是说不出口、不能再去看看吧、这么好了没有时间的推移和一些朋友都不可能成为我朋友这里是我们生活水平和好，这样可以理解一下自己是一个人大华工业相机图像采集Python代码实现
1 #!/usr/bin/env python 2 # coding: utf-8 3 ‘‘‘ 4 Created on 2017-10-25 5 6 @author: 7 ‘‘‘ 8 9 from ImageConvert import * 10 from MVSDK import * 11 import time 12 import numpy 13 import gc 14 from PIL import Image 15 from queue import Queue 16 # from Helper import MessageBox 17 18 19 class Camera: 20 21 def __init__(self): 22 23 self.g_cameraStatusUserInfo = b"statusInfo" 24 self.g_Image_Grabbing_Timer = 10 # unit : s 25 self.g_isStop = 0 26 self.connectCallBackFuncEx = connectCallBackEx(self.deviceLinkNotify) 27 self.frameCallbackFuncEx = callbackFuncEx(self.onGetFrameEx) 28 self.dev = None 29 self.qimage = Queue(maxsize=0) 30 self.userInfo = b"test" 31 # self.messagebox = MessageBox() 32 33 def onGetFrameEx(self, frame, userInfo): 34 """ 取流回调函数Ex """ 35 if (self.g_isStop == 1): 36 return 37 38 nRet = frame.contents.valid(frame) 39 if (nRet != 0): 40 print("frame is invalid!") 41 # 释放驱动图像缓存资源 42 frame.contents.release(frame) 43 return 44 45 print("BlockId = {}".format(str(frame.contents.getBlockId(frame)))) 46 47 #此处客户应用程序应将图像拷贝出使用 48 # 给转码所需的参数赋值 49 imageParams = IMGCNV_SOpenParam() 50 imageParams.dataSize = frame.contents.getImageSize(frame) 51 imageParams.height = frame.contents.getImageHeight(frame) 52 imageParams.width = frame.contents.getImageWidth(frame) 53 imageParams.paddingX = frame.contents.getImagePaddingX(frame) 54 imageParams.paddingY = frame.contents.getImagePaddingY(frame) 55 imageParams.pixelForamt = frame.contents.getImagePixelFormat(frame) 56 57 # 将裸数据图像拷出 58 imageBuff = frame.contents.getImage(frame) 59 userBuff = c_buffer(b‘ ‘, imageParams.dataSize) 60 memmove(userBuff, c_char_p(imageBuff), imageParams.dataSize) 61 62 # 释放驱动图像缓存资源 63 frame.contents.release(frame) 64 65 # 如果图像格式是 Mono8 直接使用 66 if imageParams.pixelForamt == EPixelType.gvspPixelMono8: 67 grayByteArray = bytearray(userBuff) 68 cvImage = numpy.array(grayByteArray).reshape(imageParams.height, imageParams.width) 69 else: 70 # 转码 => BGR24 71 rgbSize = c_int() 72 rgbBuff = c_buffer(b‘ ‘, imageParams.height * imageParams.width * 3) 73 74 nRet = IMGCNV_ConvertToBGR24(cast(userBuff, c_void_p), 75 byref(imageParams), 76 cast(rgbBuff, c_void_p), 77 byref(rgbSize)) 78 79 colorByteArray = bytearray(rgbBuff) 80 cvImage = numpy.array(colorByteArray).reshape(imageParams.height, imageParams.width, 3) 81 82 img = Image.fromarray(cvImage) 83 self.qimage.put(img) 84 gc.collect() 85 86 def deviceLinkNotify(self, connectArg, linkInfo): 87 """ 相机连接状态回调函数 """ 88 if ( EVType.offLine == connectArg.contents.m_event ): 89 print("camera has off line, userInfo [%s]" %(c_char_p(linkInfo).value)) 90 elif ( EVType.onLine == connectArg.contents.m_event ): 91 print("camera has on line, userInfo [%s]" %(c_char_p(linkInfo).value)) 92 93 def subscribeCameraStatus(self, camera): 94 """ 注册相机连接状态回调 注册上下线通知""" 95 eventSubscribe = pointer(GENICAM_EventSubscribe()) 96 eventSubscribeInfo = GENICAM_EventSubscribeInfo() 97 eventSubscribeInfo.pCamera = pointer(camera) 98 nRet = GENICAM_createEventSubscribe(byref(eventSubscribeInfo), byref(eventSubscribe)) 99 if ( nRet != 0): 100 print("create eventSubscribe fail!") 101 return -1 102 103 nRet = eventSubscribe.contents.subscribeConnectArgsEx(eventSubscribe, self.connectCallBackFuncEx, self.g_cameraStatusUserInfo) 104 if ( nRet != 0 ): 105 print("subscribeConnectArgsEx fail!") 106 # 释放相关资源 107 eventSubscribe.contents.release(eventSubscribe) 108 return -1 109 110 # 不再使用时，需释放相关资源 111 eventSubscribe.contents.release(eventSubscribe) 112 return 0 113 114 def unsubscribeCameraStatus(self, camera): 115 """反注册相机连接状态回调 反注册上下线通知""" 116 eventSubscribe = pointer(GENICAM_EventSubscribe()) 117 eventSubscribeInfo = GENICAM_EventSubscribeInfo() 118 eventSubscribeInfo.pCamera = pointer(camera) 119 nRet = GENICAM_createEventSubscribe(byref(eventSubscribeInfo), byref(eventSubscribe)) 120 if ( nRet != 0): 121 print("create eventSubscribe fail!") 122 return -1 123 124 nRet = eventSubscribe.contents.unsubscribeConnectArgsEx(eventSubscribe, self.connectCallBackFuncEx, self.g_cameraStatusUserInfo) 125 if ( nRet != 0 ): 126 print("unsubscribeConnectArgsEx fail!") 127 # 释放相关资源 128 eventSubscribe.contents.release(eventSubscribe) 129 return -1 130 131 # 不再使用时，需释放相关资源 132 eventSubscribe.contents.release(eventSubscribe) 133 return 0 134 135 def setSoftTriggerConf(self): 136 """设置软触发""" 137 if self.dev is None: 138 print("camera is None!") 139 return -1 140 141 # 创建control节点 142 acqCtrlInfo = GENICAM_AcquisitionControlInfo() 143 acqCtrlInfo.pCamera = pointer(self.dev) 144 acqCtrl = pointer(GENICAM_AcquisitionControl()) 145 nRet = GENICAM_createAcquisitionControl(pointer(acqCtrlInfo), byref(acqCtrl)) 146 if ( nRet != 0 ): 147 print("create AcquisitionControl fail!") 148 return -1 149 150 # 设置触发源为软触发 151 trigSourceEnumNode = acqCtrl.contents.triggerSource(acqCtrl) 152 nRet = trigSourceEnumNode.setValueBySymbol(byref(trigSourceEnumNode), b"Software") 153 if ( nRet != 0 ): 154 print("set TriggerSource value [Software] fail!") 155 # 释放相关资源 156 trigSourceEnumNode.release(byref(trigSourceEnumNode)) 157 acqCtrl.contents.release(acqCtrl) 158 return -1 159 160 # 需要释放Node资源 161 trigSourceEnumNode.release(byref(trigSourceEnumNode)) 162 163 # 设置触发方式 164 trigSelectorEnumNode = acqCtrl.contents.triggerSelector(acqCtrl) 165 nRet = trigSelectorEnumNode.setValueBySymbol(byref(trigSelectorEnumNode), b"FrameStart") 166 if ( nRet != 0 ): 167 print("set TriggerSelector value [FrameStart] fail!") 168 # 释放相关资源 169 trigSelectorEnumNode.release(byref(trigSelectorEnumNode)) 170 acqCtrl.contents.release(acqCtrl) 171 return -1 172 173 # 需要释放Node资源 174 trigSelectorEnumNode.release(byref(trigSelectorEnumNode)) 175 176 # 打开触发模式 177 trigModeEnumNode = acqCtrl.contents.triggerMode(acqCtrl) 178 nRet = trigModeEnumNode.setValueBySymbol(byref(trigModeEnumNode), b"On") 179 if ( nRet != 0 ): 180 print("set TriggerMode value [On] fail!") 181 # 释放相关资源 182 trigModeEnumNode.release(byref(trigModeEnumNode)) 183 acqCtrl.contents.release(acqCtrl) 184 return -1 185 186 # 需要释放相关资源 187 trigModeEnumNode.release(byref(trigModeEnumNode)) 188 acqCtrl.contents.release(acqCtrl) 189 return 0 190 191 def grabContinue(self): 192 """自由拉流""" 193 if self.dev is None: 194 print("camera is None!") 195 return -1 196 197 # 创建流对象 198 streamSourceInfo = GENICAM_StreamSourceInfo() 199 streamSourceInfo.channelId = 0 200 streamSourceInfo.pCamera = pointer(self.dev) 201 202 streamSource = pointer(GENICAM_StreamSource()) 203 nRet = GENICAM_createStreamSource(pointer(streamSourceInfo), byref(streamSource)) 204 if (nRet != 0): 205 print("create StreamSource fail!") 206 return -1 207 208 # 通用属性设置:设置触发模式为off --根据属性类型，直接构造属性节点。如触发模式是 enumNode，构造enumNode节点 209 # 自由拉流：TriggerMode 需为 off 210 trigModeEnumNode = pointer(GENICAM_EnumNode()) 211 trigModeEnumNodeInfo = GENICAM_EnumNodeInfo() 212 trigModeEnumNodeInfo.pCamera = pointer(self.dev) 213 trigModeEnumNodeInfo.attrName = b"TriggerMode" 214 nRet = GENICAM_createEnumNode(byref(trigModeEnumNodeInfo), byref(trigModeEnumNode)) 215 if ( nRet != 0 ): 216 print("create TriggerMode Node fail!") 217 # 释放相关资源 218 streamSource.contents.release(streamSource) 219 return -1 220 221 nRet = trigModeEnumNode.contents.setValueBySymbol(trigModeEnumNode, b"Off") 222 if ( nRet != 0 ): 223 print("set TriggerMode value [Off] fail!") 224 # 释放相关资源 225 trigModeEnumNode.contents.release(trigModeEnumNode) 226 streamSource.contents.release(streamSource) 227 return -1 228 229 # 需要释放Node资源 230 trigModeEnumNode.contents.release(trigModeEnumNode) 231 232 def setLineTriggerConf(self): 233 """设置外触发""" 234 if self.dev is None: 235 print("camera is None!") 236 return -1 237 238 # 创建control节点 239 acqCtrlInfo = GENICAM_AcquisitionControlInfo() 240 acqCtrlInfo.pCamera = pointer(self.dev) 241 acqCtrl = pointer(GENICAM_AcquisitionControl()) 242 nRet = GENICAM_createAcquisitionControl(pointer(acqCtrlInfo), byref(acqCtrl)) 243 if ( nRet != 0 ): 244 print("create AcquisitionControl fail!") 245 return -1 246 247 # 设置触发源为软触发 248 trigSourceEnumNode = acqCtrl.contents.triggerSource(acqCtrl) 249 nRet = trigSourceEnumNode.setValueBySymbol(byref(trigSourceEnumNode), b"Line1") 250 if ( nRet != 0 ): 251 print("set TriggerSource value [Line1] fail!") 252 # 释放相关资源 253 trigSourceEnumNode.release(byref(trigSourceEnumNode)) 254 acqCtrl.contents.release(acqCtrl) 255 return -1 256 257 # 需要释放Node资源 258 trigSourceEnumNode.release(byref(trigSourceEnumNode)) 259 260 # 设置触发方式 261 trigSelectorEnumNode = acqCtrl.contents.triggerSelector(acqCtrl) 262 nRet = trigSelectorEnumNode.setValueBySymbol(byref(trigSelectorEnumNode), b"FrameStart") 263 if ( nRet != 0 ): 264 print("set TriggerSelector value [FrameStart] fail!") 265 # 释放相关资源 266 trigSelectorEnumNode.release(byref(trigSelectorEnumNode)) 267 acqCtrl.contents.release(acqCtrl) 268 return -1 269 270 # 需要释放Node资源 271 trigSelectorEnumNode.release(byref(trigSelectorEnumNode)) 272 273 # 打开触发模式 274 trigModeEnumNode = acqCtrl.contents.triggerMode(acqCtrl) 275 nRet = trigModeEnumNode.setValueBySymbol(byref(trigModeEnumNode), b"On") 276 if ( nRet != 0 ): 277 print("set TriggerMode value [On] fail!") 278 # 释放相关资源 279 trigModeEnumNode.release(byref(trigModeEnumNode)) 280 acqCtrl.contents.release(acqCtrl) 281 return -1 282 283 # 需要释放Node资源 284 trigModeEnumNode.release(byref(trigModeEnumNode)) 285 286 # 设置触发沿 287 trigActivationEnumNode = acqCtrl.contents.triggerActivation(acqCtrl) 288 nRet = trigActivationEnumNode.setValueBySymbol(byref(trigActivationEnumNode), b"RisingEdge") 289 if ( nRet != 0 ): 290 print("set TriggerActivation value [RisingEdge] fail!") 291 # 释放相关资源 292 trigActivationEnumNode.release(byref(trigActivationEnumNode)) 293 acqCtrl.contents.release(acqCtrl) 294 return -1 295 296 # 需要释放Node资源 297 trigActivationEnumNode.release(byref(trigActivationEnumNode)) 298 acqCtrl.contents.release(acqCtrl) 299 return 0 300 301 def openCamera(self): 302 """打开相机""" 303 304 # 发现相机 305 cameraCnt, cameraList = self.enumCameras() 306 if cameraCnt is None: 307 return -1 308 309 # 显示相机信息 310 for index in range(0, cameraCnt): 311 camera = cameraList[index] 312 print(" Camera Id = " + str(index)) 313 print("Key = " + str(camera.getKey(camera))) 314 print("vendor name = " + str(camera.getVendorName(camera))) 315 print("Model name = " + str(camera.getModelName(camera))) 316 print("Serial number = " + str(camera.getSerialNumber(camera))) 317 318 camera = cameraList[0] 319 self.dev = camera 320 321 # 连接相机 322 nRet = camera.connect(camera, c_int(GENICAM_ECameraAccessPermission.accessPermissionControl)) 323 if ( nRet != 0 ): 324 print("camera connect fail!") 325 # self.messagebox.Error("camera connect fail!") 326 return -1 327 else: 328 print("camera connect success.") 329 330 # 注册相机连接状态回调 331 nRet = self.subscribeCameraStatus(camera) 332 if ( nRet != 0 ): 333 print("subscribeCameraStatus fail!") 334 return -1 335 336 # 创建流对象 337 streamSourceInfo = GENICAM_StreamSourceInfo() 338 streamSourceInfo.channelId = 0 339 streamSourceInfo.pCamera = pointer(camera) 340 341 streamSource = pointer(GENICAM_StreamSource()) 342 nRet = GENICAM_createStreamSource( 343 pointer(streamSourceInfo), 344 byref(streamSource)) 345 if (nRet != 0): 346 print("create StreamSource fail!") 347 return -1 348 349 # 注册拉流回调函数 350 nRet = streamSource.contents.attachGrabbingEx(streamSource, self.frameCallbackFuncEx, self.userInfo) 351 if (nRet != 0): 352 print("attachGrabbingEx fail!") 353 # 释放相关资源 354 streamSource.contents.release(streamSource) 355 return -1 356 357 # 开始拉流 358 nRet = streamSource.contents.startGrabbing(streamSource, c_ulonglong(0), 359 c_int(GENICAM_EGrabStrategy.grabStrartegySequential)) 360 if (nRet != 0): 361 print("startGrabbing fail!") 362 # 释放相关资源 363 streamSource.contents.release(streamSource) 364 return -1 365 366 return 0 367 368 def closeCamera(self): 369 """关闭相机""" 370 if self.dev is None: 371 print("camera is None!") 372 return -1 373 374 # 反注册相机连接状态回调 375 nRet = self.unsubscribeCameraStatus(self.dev) 376 if ( nRet != 0 ): 377 print("unsubscribeCameraStatus fail!") 378 return -1 379 380 # 断开相机 381 nRet = self.dev.disConnect(byref(self.dev)) 382 if ( nRet != 0 ): 383 print("disConnect camera fail!") 384 return -1 385 print("camera is closed") 386 return 0 387 388 def setExposureTime(self, dVal): 389 """设置曝光时间""" 390 if self.dev is None: 391 print("camera is None!") 392 return -1 393 394 # 通用属性设置:设置曝光 --根据属性类型，直接构造属性节点。如曝光是 double类型，构造doubleNode节点 395 exposureTimeNode = pointer(GENICAM_DoubleNode()) 396 exposureTimeNodeInfo = GENICAM_DoubleNodeInfo() 397 exposureTimeNodeInfo.pCamera = pointer(self.dev) 398 exposureTimeNodeInfo.attrName = b"ExposureTime" 399 nRet = GENICAM_createDoubleNode(byref(exposureTimeNodeInfo), byref(exposureTimeNode)) 400 if ( nRet != 0 ): 401 print("create ExposureTime Node fail!") 402 return -1 403 404 # 设置曝光时间 405 nRet = exposureTimeNode.contents.setValue(exposureTimeNode, c_double(dVal)) 406 if ( nRet != 0 ): 407 print("set ExposureTime value [%f]us fail!" % (dVal)) 408 # 释放相关资源 409 exposureTimeNode.contents.release(exposureTimeNode) 410 return -1 411 else: 412 print("set ExposureTime value [%f]us success." % (dVal)) 413 414 # 释放节点资源 415 exposureTimeNode.contents.release(exposureTimeNode) 416 return 0 417 418 def enumCameras(self): 419 """枚举相机 网络中搜索可连接的设备""" 420 # 获取系统单例 421 system = pointer(GENICAM_System()) 422 nRet = GENICAM_getSystemInstance(byref(system)) 423 if ( nRet != 0 ): 424 print("getSystemInstance fail!") 425 return None, None 426 427 # 发现相机 428 cameraList = pointer(GENICAM_Camera()) 429 cameraCnt = c_uint() 430 nRet = system.contents.discovery(system, byref(cameraList), byref(cameraCnt), c_int(GENICAM_EProtocolType.typeAll)); 431 if ( nRet != 0 ): 432 print("discovery fail!") 433 return None, None 434 elif cameraCnt.value < 1: 435 print("discovery no camera!") 436 # self.messagebox.Info("discovery no camera!") 437 return None, None 438 else: 439 print("cameraCnt: " + str(cameraCnt.value)) 440 return cameraCnt.value, cameraList 441 442 def grabOne(self): 443 """单次触发""" 444 if self.dev is None: 445 print("camera is None!") 446 return -1 447 448 # 创建流对象 449 streamSourceInfo = GENICAM_StreamSourceInfo() 450 streamSourceInfo.channelId = 0 451 streamSourceInfo.pCamera = pointer(self.dev) 452 453 streamSource = pointer(GENICAM_StreamSource()) 454 nRet = GENICAM_createStreamSource(pointer(streamSourceInfo), byref(streamSource)) 455 if ( nRet != 0 ): 456 print("create StreamSource fail!") 457 return -1 458 459 # 创建control节点 460 acqCtrlInfo = GENICAM_AcquisitionControlInfo() 461 acqCtrlInfo.pCamera = pointer(self.dev) 462 acqCtrl = pointer(GENICAM_AcquisitionControl()) 463 nRet = GENICAM_createAcquisitionControl(pointer(acqCtrlInfo), byref(acqCtrl)) 464 if ( nRet != 0 ): 465 print("create AcquisitionControl fail!") 466 # 释放相关资源 467 streamSource.contents.release(streamSource) 468 return -1 469 470 # 打开触发模式 471 trigModeEnumNode = acqCtrl.contents.triggerMode(acqCtrl) 472 nRet = trigModeEnumNode.setValueBySymbol(byref(trigModeEnumNode), b"On") 473 if (nRet != 0): 474 print("set TriggerMode value [On] fail!") 475 # 释放相关资源 476 trigModeEnumNode.release(byref(trigModeEnumNode)) 477 acqCtrl.contents.release(acqCtrl) 478 return -1 479 480 # 需要释放相关资源 481 trigModeEnumNode.release(byref(trigModeEnumNode)) 482 483 # 执行一次软触发 484 trigSoftwareCmdNode = acqCtrl.contents.triggerSoftware(acqCtrl) 485 nRet = trigSoftwareCmdNode.execute(byref(trigSoftwareCmdNode)) 486 if( nRet != 0 ): 487 print("Execute triggerSoftware fail!") 488 # 释放相关资源 489 trigSoftwareCmdNode.release(byref(trigSoftwareCmdNode)) 490 acqCtrl.contents.release(acqCtrl) 491 streamSource.contents.release(streamSource) 492 return -1 493 494 # 释放相关资源 495 trigSoftwareCmdNode.release(byref(trigSoftwareCmdNode)) 496 acqCtrl.contents.release(acqCtrl) 497 streamSource.contents.release(streamSource) 498 return 0 499 500 def setROI(self, OffsetX, OffsetY, nWidth, nHeight): 501 """设置感兴趣区域 --- 感兴趣区域的宽高 和 xy方向的偏移量 入参值应符合对应相机的递增规则""" 502 #获取原始的宽度 503 widthMaxNode = pointer(GENICAM_IntNode()) 504 widthMaxNodeInfo = GENICAM_IntNodeInfo() 505 widthMaxNodeInfo.pCamera = pointer(self.dev) 506 widthMaxNodeInfo.attrName = b"WidthMax" 507 nRet = GENICAM_createIntNode(byref(widthMaxNodeInfo), byref(widthMaxNode)) 508 if ( nRet != 0 ): 509 print("create WidthMax Node fail!") 510 return -1 511 512 oriWidth = c_longlong() 513 nRet = widthMaxNode.contents.getValue(widthMaxNode, byref(oriWidth)) 514 if ( nRet != 0 ): 515 print("widthMaxNode getValue fail!") 516 # 释放相关资源 517 widthMaxNode.contents.release(widthMaxNode) 518 return -1 519 520 # 释放相关资源 521 widthMaxNode.contents.release(widthMaxNode) 522 523 # 获取原始的高度 524 heightMaxNode = pointer(GENICAM_IntNode()) 525 heightMaxNodeInfo = GENICAM_IntNodeInfo() 526 heightMaxNodeInfo.pCamera = pointer(self.dev) 527 heightMaxNodeInfo.attrName = b"HeightMax" 528 nRet = GENICAM_createIntNode(byref(heightMaxNodeInfo), byref(heightMaxNode)) 529 if ( nRet != 0 ): 530 print("create HeightMax Node fail!") 531 return -1 532 533 oriHeight = c_longlong() 534 nRet = heightMaxNode.contents.getValue(heightMaxNode, byref(oriHeight)) 535 if ( nRet != 0 ): 536 print("heightMaxNode getValue fail!") 537 # 释放相关资源 538 heightMaxNode.contents.release(heightMaxNode) 539 return -1 540 541 # 释放相关资源 542 heightMaxNode.contents.release(heightMaxNode) 543 544 # 检验参数 545 if ( ( oriWidth.value < (OffsetX + nWidth)) or ( oriHeight.value < (OffsetY + nHeight)) ): 546 print("please check input param!") 547 return -1 548 549 # 设置宽度 550 widthNode = pointer(GENICAM_IntNode()) 551 widthNodeInfo = GENICAM_IntNodeInfo() 552 widthNodeInfo.pCamera = pointer(self.dev) 553 widthNodeInfo.attrName = b"Width" 554 nRet = GENICAM_createIntNode(byref(widthNodeInfo), byref(widthNode)) 555 if ( nRet != 0 ): 556 print("create Width Node fail!") 557 return -1 558 559 nRet = widthNode.contents.setValue(widthNode, c_longlong(nWidth)) 560 if ( nRet != 0 ): 561 print("widthNode setValue [%d] fail!" % (nWidth)) 562 # 释放相关资源 563 widthNode.contents.release(widthNode) 564 return -1 565 566 # 释放相关资源 567 widthNode.contents.release(widthNode) 568 569 # 设置高度 570 heightNode = pointer(GENICAM_IntNode()) 571 heightNodeInfo = GENICAM_IntNodeInfo() 572 heightNodeInfo.pCamera = pointer(self.dev) 573 heightNodeInfo.attrName = b"Height" 574 nRet = GENICAM_createIntNode(byref(heightNodeInfo), byref(heightNode)) 575 if ( nRet != 0 ): 576 print("create Height Node fail!") 577 return -1 578 579 nRet = heightNode.contents.setValue(heightNode, c_longlong(nHeight)) 580 if ( nRet != 0 ): 581 print("heightNode setValue [%d] fail!" % (nHeight)) 582 # 释放相关资源 583 heightNode.contents.release(heightNode) 584 return -1 585 586 # 释放相关资源 587 heightNode.contents.release(heightNode) 588 589 # 设置OffsetX 590 OffsetXNode = pointer(GENICAM_IntNode()) 591 OffsetXNodeInfo = GENICAM_IntNodeInfo() 592 OffsetXNodeInfo.pCamera = pointer(self.dev) 593 OffsetXNodeInfo.attrName = b"OffsetX" 594 nRet = GENICAM_createIntNode(byref(OffsetXNodeInfo), byref(OffsetXNode)) 595 if ( nRet != 0 ): 596 print("create OffsetX Node fail!") 597 return -1 598 599 nRet = OffsetXNode.contents.setValue(OffsetXNode, c_longlong(OffsetX)) 600 if ( nRet != 0 ): 601 print("OffsetX setValue [%d] fail!" % (OffsetX)) 602 # 释放相关资源 603 OffsetXNode.contents.release(OffsetXNode) 604 return -1 605 606 # 释放相关资源 607 OffsetXNode.contents.release(OffsetXNode) 608 609 # 设置OffsetY 610 OffsetYNode = pointer(GENICAM_IntNode()) 611 OffsetYNodeInfo = GENICAM_IntNodeInfo() 612 OffsetYNodeInfo.pCamera = pointer(self.dev) 613 OffsetYNodeInfo.attrName = b"OffsetY" 614 nRet = GENICAM_createIntNode(byref(OffsetYNodeInfo), byref(OffsetYNode)) 615 if ( nRet != 0 ): 616 print("create OffsetY Node fail!") 617 return -1 618 619 nRet = OffsetYNode.contents.setValue(OffsetYNode, c_longlong(OffsetY)) 620 if ( nRet != 0 ): 621 print("OffsetY setValue [%d] fail!" % (OffsetY)) 622 # 释放相关资源 623 OffsetYNode.contents.release(OffsetYNode) 624 return -1 625 626 # 释放相关资源 627 OffsetYNode.contents.release(OffsetYNode) 628 return 0 629 630 def demo(self): 631 # 发现相机 632 cameraCnt, cameraList = self.enumCameras() 633 if cameraCnt is None: 634 return -1 635 636 # 显示相机信息 637 for index in range(0, cameraCnt): 638 camera = cameraList[index] 639 print(" Camera Id = " + str(index)) 640 print("Key = " + str(camera.getKey(camera))) 641 print("vendor name = " + str(camera.getVendorName(camera))) 642 print("Model name = " + str(camera.getModelName(camera))) 643 print("Serial number = " + str(camera.getSerialNumber(camera))) 644 645 # 选择第一个相机 646 camera = cameraList[0] 647 self.dev = camera 648 649 # 打开相机 650 nRet = self.openCamera(self.dev) 651 if ( nRet != 0 ): 652 print("openCamera fail.") 653 self.messagebox.Error("openCamera fail !") 654 return -1 655 656 self.setSoftTriggerConf() 657 658 # 创建流对象 659 streamSourceInfo = GENICAM_StreamSourceInfo() 660 streamSourceInfo.channelId = 0 661 streamSourceInfo.pCamera = pointer(camera) 662 663 streamSource = pointer(GENICAM_StreamSource()) 664 nRet = GENICAM_createStreamSource(pointer(streamSourceInfo), byref(streamSource)) 665 if ( nRet != 0 ): 666 print("create StreamSource fail!") 667 self.messagebox.Error("create StreamSource fail!") 668 return -1 669 670 # # 通用属性设置:设置触发模式为off --根据属性类型，直接构造属性节点。如触发模式是 enumNode，构造enumNode节点 671 # # 自由拉流：TriggerMode 需为 off 672 # trigModeEnumNode = pointer(GENICAM_EnumNode()) 673 # trigModeEnumNodeInfo = GENICAM_EnumNodeInfo() 674 # trigModeEnumNodeInfo.pCamera = pointer(camera) 675 # trigModeEnumNodeInfo.attrName = b"TriggerMode" 676 # nRet = GENICAM_createEnumNode(byref(trigModeEnumNodeInfo), byref(trigModeEnumNode)) 677 # if ( nRet != 0 ): 678 # print("create TriggerMode Node fail!") 679 # # 释放相关资源 680 # streamSource.contents.release(streamSource) 681 # return -1 682 # 683 # nRet = trigModeEnumNode.contents.setValueBySymbol(trigModeEnumNode, b"On") 684 # if ( nRet != 0 ): 685 # print("set TriggerMode value [Off] fail!") 686 # # 释放相关资源 687 # trigModeEnumNode.contents.release(trigModeEnumNode) 688 # streamSource.contents.release(streamSource) 689 # return -1 690 # 691 # # 需要释放Node资源 692 # trigModeEnumNode.contents.release(trigModeEnumNode) 693 694 # 注册拉流回调函数 695 nRet = streamSource.contents.attachGrabbingEx(streamSource, self.frameCallbackFuncEx, self.userInfo) 696 if ( nRet != 0 ): 697 print("attachGrabbingEx fail!") 698 self.messagebox.Error("attachGrabbingEx fail!") 699 # 释放相关资源 700 streamSource.contents.release(streamSource) 701 return -1 702 703 # 开始拉流 704 nRet = streamSource.contents.startGrabbing(streamSource, c_ulonglong(0), 705 c_int(GENICAM_EGrabStrategy.grabStrartegySequential)) 706 if( nRet != 0): 707 print("startGrabbing fail!") 708 self.messagebox.Error("startGrabbing fail!") 709 # 释放相关资源 710 streamSource.contents.release(streamSource) 711 return -1 712 713 # 循环触发 714 # while True: 715 # self.grabOne(camera) 716 # time.sleep(1) 717 # 718 # # 反注册回调函数 719 # nRet = streamSource.contents.detachGrabbingEx(streamSource, self.frameCallbackFuncEx, userInfo) 720 # if ( nRet != 0 ): 721 # print("detachGrabbingEx fail!") 722 # # 释放相关资源 723 # streamSource.contents.release(streamSource) 724 # return -1 725 # 726 # # 停止拉流 727 # nRet = streamSource.contents.stopGrabbing(streamSource) 728 # if ( nRet != 0 ): 729 # print("stopGrabbing fail!") 730 # # 释放相关资源 731 # streamSource.contents.release(streamSource) 732 # return -1 733 # 734 # # 关闭相机 735 # nRet = self.closeCamera(camera) 736 # if ( nRet != 0 ): 737 # print("closeCamera fail") 738 # # 释放相关资源 739 # streamSource.contents.release(streamSource) 740 # return -1 741 # 742 # # 释放相关资源 743 # streamSource.contents.release(streamSource) 744 # return 0 745 746 747 if __name__ == "__main__": 748 749 cam = Camera() 750 nRet = cam.demo() 751 if nRet != 0: 752 print("Some Error happend") 753 print("--------- Demo end ---------") 754 # 3s exit 755 time.sleep(3)
以上是关于工业相机设计图像处理和方案实现的主要内容，如果未能解决你的问题，请参考以下文章
一种RK3399+MIPI+FPGA的高速工业相机的设计方案
Baumer工业相机堡盟相机如何使用BGAPI SDK和Opencv联动实现图像转换成视频（C#）
基于cyclone V的USB3.0/GIGE工业相机模块设计方案