38results about How to "Convenient and objective evaluation" patented technology

The present invention relates to lung measurement. In order to provide enhanced information about a patient that facilitates further assessment steps, 2D X-ray image data of a patient's chest is provided, and the image data is segmented to identify lung structures to provide segmented image data separated from un-segmented areas. Further, spatial lung volume information is extracted from the image data using the segmented image data derived from the image data. Still further, lungs symmetry information is determined using the extracted spatial lung volume information. Finally, the lungs symmetry information is provided to a user. For example, a 2D X-ray image data of a patient's chest is provided (84) and a lungs mask image is formed (86) after the step of segmenting the input image data. Then, the lungs mask image is used to define areas, within which a predetermined adaptation is applied (88) to the original 2D X-ray image data producing a thorax mask image. Next, left and right images are provided (90) showing the left and the right spatial lungs volume information of the regions defined originally by the lungs mask image. Finally, based on the spatial lungs volume information, lungs symmetry information or total lung volumes may be calculated and provided (92).

The invention discloses a comprehensive intelligent time frequency testing system and a testing method. The system comprises a GPS (global positioning system) / Big Dipper antenna receiver, a management machine, a time frequency standard source and time standard pulse testing equipment, standard frequency testing equipment, IRIG (inter range instrumentation group) -B timing code testing equipment, a NTP / SNTP (network time protocol / simple network time protocol) message testing equipment and a PTP (precision time synchronization protocol) message testing equipment. The management machine is provided with a database and is used for running a testing and analyzing management program. The time frequency standard source is used for connecting the management machine through a communication link to realize program control. An intelligent time frequency signal switcher is provided, and the program control of the management machine is realized through the testing and analyzing management program; moreover, the switch of the program control is carried out by the intelligent time frequency signal switcher for carrying out a comprehensive intelligent time frequency test. The intelligent comprehensive test to the tested time synchronous equipment can be effectively and easily carried out with no need of manual intervention, so that the intelligentization, the standardization and the systematization levels of the tests of the complicated service function and performace of the time synchronous equipment are practically improved, the test performance is more correct, the testing efficiency is higher, and the testing time is greatly shortened.

The invention relates of an intelligent test system and a method used for IRIG (Inter-range Instrumentation Group)-B code fault-tolerant functions of a time synchronizer. The intelligent test system comprises a management machine and an IRIG-B code test device, wherein the managing machine is used for running test, analysis and management programs, and the IRIG-B code test device is connected with the management machine by a communication link to realize program control. The intelligent test system is characterized by being provided with an intelligent time frequency signal switcher, the program control of the management machine is realized by the test, analysis and management programs in the management machine, and the switching of the program control is carried out by the intelligent time frequency signal switcher. The intelligent test system is used for testing an IRIG-B code precision recognizing function, an IRIG-B code leap second processing function, and a IRIG-B code leap yearprocessing function. Under the condition of no manual intervention, the intelligent test system and the test method can easily and effectively carry out an intelligent test on the IRIG-B code fault-tolerant function and performance of the time synchronizer, and actually enhance the intelligent level of testing the complex functions and the performance of the time synchronizer. The test performance is accurate, the test efficiency is high, and the test time is greatly shortened.

The present invention relates to an image quality evaluation method based on the human visual system, comprising the following steps: (a) acquiring an original image and a distorted image; (b) establishing a GLOP filtering model, and performing an evaluation of the original image and the obtained image according to the GLOP filtering model Filter the distorted image to obtain the filtered original image and the filtered distorted image; (c) obtain the structural similarity according to the filtered original image and the filtered distorted image; (d) obtain the obtained structure according to the structural similarity The objective value of the quality evaluation of the distorted image. The embodiment of the present invention not only improves the subjective and objective consistency of images, but also improves the objective evaluation of distorted images.

The invention belongs to the field of medicine and relates to a profile model for simulating the performance of the tumor contrast-enhanced ultrasonography and applied in the tumor diagnosis and treatment study. The profile model is characterized by comprising a tumor gel used for simulating a tumor, and a normal tissue gel used for simulating the surrounding normal tissue. The tumor gel comprises a nano micro-bubble ultrasonic contrast agent. The nano micro-bubble ultrasonic contrast agent is distributed uniformly, good in dispersibility, strong in imaging effect in vivo and in vitro, and better in stability in the high / low-frequency ultrasonic sound field. Therefore, the profile model facilitates the contrast-enhanced ultrasonic scanning process of a user, the practice of the tumor aspiration biopsy and the practice of the tumor ablation therapy with the help of the high / low-frequency ultrasonic guidance.