97 results about "Thermal image processing" patented technology

Various techniques are disclosed for systems and methods using thermal imaging to intelligently monitor thoroughfares. For example, an intelligent monitoring system may include an infrared imaging module, a processor, a communication module, a memory, and an adjustable component. The system may be mounted, installed, or otherwise disposed at various locations along thoroughfares, and capture thermal images of a scene that includes at least a portion of the thoroughfares. Various thermal image processing and analysis operations may be performed on the thermal images to generate comprehensive monitoring information including an indication of detected objects in the scene and at least one attribute associated with the objects. Various actions may be taken, such as generating various alarms and intelligently adjusting operation of various adjustable devices on thoroughfares, based on the monitoring information. The monitoring information may be shared among multiple instances of the system, and may be communicated to external devices.

A method for leakage detection of underground pipeline corridor based on dynamic infrared thermal image processing. The leakage can be detected by the following steps, including: converting infrared thermal videos into infrared thermal images; obtaining the gray scale information and temperature information of internal environment of the underground pipeline corridor. The gray scale information can realize the conventional target of pipe line state identification inside the pipeline corridor, and the temperature information can be used to detect the pipe leakage.

The invention discloses an infrared-heat-image processing method based on region segmentation and image fusion. The infrared-heat-image processing method includes the steps that video stream data of the heating stage is online collected in real time; then images are preprocessed to extract edge information, heat image sequences are subjected to equal region segmentation, and spatial correlation ofeach sub-region is analyzed; in other words, according to time sequences, correlation coefficients between adjacent frames of all sub regions are computed; the correlation coefficients are compared with threshold values, upper-left-corner coordinate values and corresponding frame numbers of sub regions without meeting the threshold-value condition are returned, a frame of image is fused through the upper-left-corner coordinate values and the corresponding frame numbers of the sub regions; defect information enhancement is achieved accordingly, defects are rapidly identified, and quantitativedetection of the defects is completed.

The invention relates to a compression and reconstruction method for efficiently fixing viewing field pulse thermal wave image sequence and belongs to the field of equipment thermal wave imaging nondestructive detection techniques. Aiming to solve the colossal data processing quantity problem of the infrared thermal wave image sequence, the method comprises the following steps: a thermal wave pixel point data sequence heat conduction law and a sequence partition method are adopted to classify the data sequences so as to generate a corresponding representative sequence and a category table; according to a one-dimension thermal wave temperature attenuation model and a multinomial data fitting method, a fitting coefficient table of all category sequences is obtained; thermal image acquisition parameters, and the data of both the fitting coefficient table and the category table are adopted as the compression characteristic of the thermal wave image sequence, so as to form a thermal wave image compression document for storage; and the fitting coefficients are adopted to rebuild the thermal wave image sequence according to the category table. According to the invention, the category number can be flexibly set according to practical detection requirements; the ratio of compression can reach more than ten thousand times, and the calculation quantity is reduced by thousand times; and the requirement on computer hardware is remarkably reduced. The method is flexible in use, is particularly suitable for large-viewing field thermal image processing, and has an extensive application prospect.

A spatial correlation-based infrared thermal image processing method disclosed by the present invention comprises the steps of firstly acquiring the video stream data at a heating stage in the real-time and online manners, then extracting the edge information, analyzing the correlation of the adjacent two frames, calculating a correlation coefficient and drawing a correlation coefficient curve changing along with time. The method of the present invention reflects the difference of a thermal response state of a tested piece after the multi-defect coupling and during a heating process, and finally, according to a preset value, several appropriate thermal images are selected to fuse and then carry out the subsequent defect detection.

The invention discloses an infrared thermal image processing method based on abnormal area location. The method includes the steps that infrared thermal image video streaming of a tested part is collected from heating starting to cooling finishing, each frame of image is divided in an equal area mode, a Pearson correlation coefficient curve of each area is obtained through calculation according to the frame interval,gross errordetection is carried out on a Pearson correlation coefficient sequence before and after the heating finishing moment, and when it is judged that a gross error exists, the area is judged to be an abnormal area; authenticity of the abnormal area is judged to obtain an authenticity abnormal area; askewness value of an infrared thermal response sequence of each pixel point in the authenticity abnormal area is calculated, infrared thermal response of pixel points with the skewness values larger than the threshold value is enhanced, and infrared thermal response of the other pixel points is weakened, so that the infrared thermal image video streaming with the abnormal area enhanced is obtained. Analysis is carried out from the image area information extractionperspective, interference caused by nonuniform thermal emissivity on the surface of a material is inhibited, and defect characteristics are enhanced.

A method of image processing for heat accumulation of a thermal printer refreshes grayscale output of printing pixels that lie in correction regions with smear phenomena caused by heat accumulation of a thermal printer. The actual grayscale output of the printing pixels of the correction regions is lower than the original grayscale output and the scale of correction of the grayscale output is gradually decreased to zero along the direction of printing. The method substantially eliminates the smear phenomena caused by heat accumulation and allows a thermal printer to provide better output.

The invention discloses a potato defect detecting method. According to the potato defect detecting method, a thermal imaging technology is used for rapidly recognizing peeled potatoes which are damaged, rot and sprout, and the thermal image processing processes of a computer are as follows: carrying out median filtering or average filtering and noise reduction on thermal images, extracting the regions of the potato thermal images by adopting a threshold value segmentation method, calculating the average temperature values of pixels in the regions, then calculating the difference value between the temperature value of each pixel in the regions and the average temperature value, and calculating the areas S of real objects to which the pixels with the absolute values of the difference values being greater than 1 DEG C, if S is greater than 25mm<2>, the potatoes are defective. The potato defect detecting method disclosed by the invention has high efficiency and good recognition accuracy and can be popularized and applied to the field of potato defect detection.

The invention discloses a thermal image information display control device and a thermal image information display control method, and relates to the application fields of thermal image devices, thermal image processing devices, and infrared thermal imaging detection. According to a thermal image device in the prior art, a shooting person selects a shot object needs to be shot according to the subjective experience, so the shot object is easy to shoot mistakenly or omit. According to the invention, based on the stored shot object information, shot object selection information acquired by shot object information of a specified number is displayed while displaying an infrared thermal image, the shot object selection information acquired by the shot object information having specific information and the shot object selection information acquired by other shot object information are displayed in a distinguishing manner, or one of the shot object selection information acquired by the shot object information having specific information and the shot object selection information acquired by other shot object information is not displayed. When a user selects the shot object selection information, a corresponding reference image is displayed; so that the user can conveniently distinguish a shot object needs to be shot from shot objects does not need to be shot, and according to the reference of the reference image, the shooting quality is improved, and problems existing currently can be solved.

The invention discloses a medical infrared thermal image processing system. The medical infrared thermal image processing system comprises a human body three-jiao infrared thermal image acquisition unit used for acquiring six human body forward and backward direction infrared thermal images which are separated according to three jiaos, a pseudo-color generating unit used for setting color pixel points with different RGB values for different temperature areas in the six infrared thermal images according to body surface temperature of the human body and a preset rule, an infrared thermal image recognition unit used for simulating the directions of three yin channels and three yang channels of the human body, and an information extraction unit used for extracting the RGB values of the color pixel points in the yin channel and yang channel directions with the directions of the channels as the guide and storing the RGB values in a data storage unit. By using the medical infrared thermal image processing system, the RGB values at different channel positions can be conveniently and accurately checked, and learning is facilitated for medical workers.

A thermal image analysis monitoring device and monitoring system, and a thermal image analysis monitoring method, relating to the application field of thermal image devices, thermal image processing apparatuses for receiving and processing thermal image data, and thermal image shooting. Aiming at the shortcoming in the prior art that when data such as thermal image data frames is continuously transmitted to a background computer, a user needs to monitor thermal image data, etc. of a shot object for a long time, so that the user is apt to fatigue and then omits emergency situations, provided are a thermal image analysis monitoring device and monitoring system, and a thermal image analysis monitoring method, which analyze specified frames of acquired thermal image data frames, judge whether a sending condition is met or not according to a comparison result between the analysis data obtained thereby and a specified judgement value, which is taken as a judgement condition or one of a number of judgement conditions, and send specified notification information in a wireless mode when the sending condition of the specified notification information is met. Therefore, the workload of subjective monitoring of the user is reduced.

The invention discloses a thermal-image processing method capable of inhibiting effects of uneven thermal emissivity of a material surface. Infrared thermal response amplitudes before starting of heating are subtracted from infrared thermal response amplitudes of different pixels in an infrared thermal image when cooling is over, and then the difference between infrared thermal response amplitudes of different pixels at any moment of a period from beginning of the heating to the end of the heating and the infrared thermal response amplitudes before the heating is subtracted from the result so that a new thermal infrared image is generated. The thermal infrared image generated through the method is capable of inhibiting effects of uneven thermal emissivity existing at a material surface on the thermal infrared image and avoiding interferences on defect detection and improving accuracy rate of defect detection.

The invention relates to a human body infrared thermal image processing method and system. The processing method includes the steps of obtaining a minimum temperature Tmin and a maximum temperature Tmax of a human body based on a human body temperature profile; identifying a region with the temperature in a range from Tmin to Tmin+t1 as a first region and a region with the temperature in a range from Tmax-t2 to Tmax as a second region, where t1 is a first preset value, t2 is a second preset value, and Tmin+t1 is less than Tmax-t2; and taking the first region as a low temperature region to be filled with a low temperature color, and taking the second region as a high temperature region to be filled with a high temperature color, the low temperature color being different from the high temperature color. By implementing the invention, the low temperature region and the high temperature region of an infrared thermal image of the human body can be clearly displayed at the same time, withoutcumbersome operations of a user in the past, that is, to first shift the window of the infrared thermal image of the human body toward the low temperature region to obtain a first region image and then shift to the high temperature region to obtain a second region image, with the low temperature region and the high temperature region being unable to be displayed at the same time.

The invention relates to a tongue picture analysis method based on infrared medical images and visible light imaging; the method comprises the following steps: using an infrared lens to collect user tongue picture information so as to obtain infrared thermal images of a user tongue; using an infrared thermal pattern processing module to process the user tongue infrared thermal images, thus obtaining the temperature of each pixel point of the tongue; using a visible light camera to collect visible light images of the user tongue; comparing the user tongue visible light images with a tongue hologram, thus obtaining a user tongue hologram; comparing the user tongue hologram with the user tongue infrared thermal image, thus obtaining heat distribution conditions of corresponding areas of the user tongue; respectively comparing the temperature of each area of the user tongue with the temperature of each area of a tongue of a normal human body, thus obtaining the health status information of certain body part corresponding to the user tongue according to the comparison result and the user tongue hologram.

A thermal image monitoring device and monitoring system, and a thermal image monitoring method of the present invention, relating to the application field of thermal image devices, thermal image processing apparatuses for receiving and processing thermal image data, and thermal image shooting. In the prior art, when data such as thermal image data frames are continuously transmitted to a background computer, a user needs to monitor thermal image data, etc. of a shot object for a long time, so that the user is apt to fatigue and then omits emergency situations. Provided are a thermal image monitoring device and monitoring system, and a thermal image monitoring method. Configured specified notification information is sent according to a sending condition of specified notification information, thereby achieving the beneficial effects of continuous monitoring, difficult omission of emergency situations, reduction of labour intensity, reduction of system costs, and simple use.

The invention provides a PCB-based short-circuit fault location system. The system includes a DC power source connected to a PCB under test and a thermal image processing device. The DC power source is used for performing DC power supply on a tested power supply circuit in the PCB under test. The thermal image processing device is used for monitoring the real-time thermal imaging of the PCB undertest after instant power-on, and locating a short-circuit fault through an over-temperature condition in the real-time thermal imaging. According to the invention, the short-circuit fault of the PCB can be quickly located.

The invention provides a thermal image shooting device and a thermal image shooting method, and relates to the application field of thermal image shooting devices, thermal image processing devices and thermal image shooting. According to a thermal image shooting device in the prior art, an object which needs shooting is selected according to the subjective experience of a user, therefore, the efficiency is low, and omission occurs easily. According to the thermal image shooting device and the thermal image shooting method, on the basis of the information of multiple objects which are stored in advance with an attached sorting order, special object information is specified, and object indication information obtained by the special object information is particularly displayed and serves as an information cue of an object which needs shooting currently; then, when indication switchover is conducted, the specified special object information is switched over according to the sorting order. Therefore, the shooting speed is increased, and omission does not occur easily.