公开(公告)号：US20030044042A1

公开(公告)日：2003-03-06

申请号：US10143386

申请日：2002-05-10

Applicant: Detector Electronics Corporation

Inventor： John D. King ,  Paul M. Junck

IPC: G06K009/00

CPC classification number: G08B17/125

Abstract: An apparatus and method for performing first and second imaging processes contemporaneously, in particular where one of the processes is detecting fires based on images of the flames. The apparatus includes an image sensor for producing a video image, a frame grabber for capturing first frames and second frames, a processor for processing the data within the frames, and an output device. The apparatus may also include an adjustment mechanism for adjusting the image settings of the image sensor between settings suitable for flame imaging and non-flame imaging, and a control mechanism for controlling the image settings of the image sensor. In the method at least two first frames are obtained, and a plurality of second frames are obtained. The first and second frames are used for first and second processes. The first and second processes are contemporaneous, so that they are carried out within the same time period without interfering with one another. When the first process is flame detection, individual pairs of pixels having a property such as intensity that meets a first threshold are identified within the first frames, and are assembled into blobs. Additional properties of the pixel pairs and the blobs overall are evaluated in relation with additional thresholds. Blobs or pixels that do not meet the thresholds are excluded. Any blobs remaining after all evaluations are considered fires.

Abstract translation: 一种用于同时执行第一和第二成像过程的设备和方法，特别是其中一个过程基于火焰的图像来检测火灾。 该装置包括用于产生视频图像的图像传感器，用于捕获第一帧和第二帧的帧抓取器，用于处理帧内的数据的处理器和输出装置。 该装置还可以包括用于在适于火焰成像和非火焰成像的设置之间调整图像传感器的图像设置的调节机构和用于控制图像传感器的图像设置的控制机构。 在该方法中，获得至少两个第一帧，并且获得多个第二帧。 第一和第二帧用于第一和第二进程。 第一和第二过程是同时期的，使得它们在相同的时间段内进行而不会彼此干扰。 当第一过程是火焰检测时，在第一帧内识别具有满足第一阈值的强度等性质的各个像素对，并被组装成斑块。 与附加阈值相关地评估像素对和总体的附加属性。 排除不符合阈值的Blob或像素。 所有评估后剩余的任何斑点都被视为火灾。