32results about How to "High overlap rate" patented technology

The present invention discloses a visual target detection and labeling method. The method includes: an image inputting step, to input an image to be detected; a candidate region extracting step, to extract a candidate window as the candidate region from the image to be detected using selectively search algorithm; a feature description extracting step, to perform feature description on the candidate region using a pre-trained large-scale convolutional neural network and output the feature description of the candidate region; a visual target predicting step, to predict the candidate region based on the feature description of the candidate region using a pre-trained object detection module, to estimate regions having the visual target; and a position labeling step, to labeling the position of the visual target according to the estimated result. Experiments show that, compared with the mainstream week supervision visual target detection and labeling method, the present invention has a stronger ability to excavate positive samples and a more general application prospect, and is suitable for visual target detection and automatic labeling tasks on the large-scale data set.

The invention discloses a fluorescent probe for detecting hydrogen sulfide (H2S) and hypochlorous acid (HClO) in cell lysosomes simultaneously or respectively as well as a preparation method and application of the fluorescent probe, and belongs to the field of analytical chemistry. The molecular formula of the probe disclosed by the invention is C44H43N9O7, and the structural formula of the probe is shown in the formula (I). According to the invention, multiple target molecules (H2S, HClO and H2S/ HClO) are simultaneously or respectively detected by a single probe, and different signal responses can be produced for different target molecules. The probe of the invention has the specificity of selecting H2S and HClO, and strong capacity of resisting interference of other molecules. The fluorescent probe disclosed by the invention can be applied to detection of H2S and HClO in a water environment and a cellular level, is a simple, fast and sensitive molecular specificity detection reagent of H2S and HClO and has broad application prospects in the field of biomolecule detection.

The invention discloses a mitochondria target hydrogen peroxide molecular fluorescent probe and a preparation method and application thereof and belongs to the technical field of analytical chemistry. A molecular structural formula of the probe is shown as the formula I and is short as Mito-H2O2. The preparation method of the probe molecule is simple, achieves quick detection on hydrogen peroxide molecules, is good in selectivity and strong in antijamming capability, can be used for detecting hydrogen peroxide molecules in mitochondria of cells, has the characteristics of being quick, simple and flexible and has wide application prospect in the biological molecular detection field.

The invention provides an information classification method and device. The method comprises the following steps of: obtaining a plurality of example feature tags and obtaining a relationship between each example feature tag and a to-be-classified subject directory; carrying out word segmentation on a plurality of to-be-classified sentences so as to obtain a to-be-processed word set; carrying out similar word replacement processing on to-be-processed words to obtain an updated word set; generating a to-be-classified feature tag according to the frequency of a first word combination included in each to-be-classified sentence in the updated word set; calculating a maximum semantic similarity between the to-be-classified feature tag and the plurality of example feature tags, and when the maximum semantic similarity b is greater than or equal to a preset similarity threshold value, taking an example feature tag corresponding to the maximum semantic similarity as a target feature tag of the to-be-classified feature tag; and labelling the to-be-classified sentence corresponding to the to-be-classified feature tag as a subject directory corresponding to the target feature tag. The method and device provided by the invention can be used for enhancing the information classification efficiency.

The invention relates to the field of image detection, and the labeling effect is improved by fusing a binary classification result of a classification model based on a DenseNet network and a binary segmentation result of a segmentation model based on a Vnet network and an FPN network. The invention particularly discloses an image labeling method and device based on multi-model fusion, computer equipment and a storage medium. The method comprises the steps of acquiring a to-be-labeled image, and the to-be-labeled image is preprocessed to obtain a plurality of instance images; inputting each instance image into a classification model based on a DenseNet network for binary classification; splicing the binary classification results corresponding to the plurality of instance images to obtain classification result images; inputting each instance image into a segmentation model based on a Vnet network and an FPN network to carry out binarization segmentation; splicing the binarization segmentation results corresponding to the plurality of instance images to obtain a segmentation result image; calculating a binarized fusion image according to the classification result image and the segmentation result image; and extracting the contour of the fused image to mark the region of interest in the to-be-marked image according to the contour.

The invention discloses application of a fluorescent probe to hydrogen peroxide molecule detection. The fluorescent probe is used for sensing and detecting the content of hydrogen peroxide in a water environment and a cytolysosome by the processes of fluorescent detection, visual quantitative detection and cell imaging detection. The H2O2 molecular probe can realize selective quick detection and is good in selectivity and strong in ability to resist interference of other molecules. Besides, color changes of a solution can be observed with the naked eyes, and the fluorescent color changes can also be observed under a UV lamp, so that the fluorescent probe has a chromophoric sensing function. The probe can be used for detecting hydrogen peroxide in the cytolysosome, and compared with a commercial lysosome dye, the imaging superposition rate of hydrogen peroxide in the lysosome is high, and the co-localization coefficient of two dyes is 0.94.

The invention relates to a social network information propagation method based on a forgetting law in order to solving the problems that in the prior art, the fact that the influence continuously reduced along with time is not taken into account, and the different responses generated when people receives information at the first time and receives information after the first time are not taken into account. The method comprises the specific steps that 1, an initial activating node set S is set; 2, an activated-state node activates a nonactivated-state neighbor node v at tx; 3, if the nonactivated-state neighbor node v is successfully activated, the nonactivated-state neighbor node v is converted to be in an activated state at tx+1 and tries to activate a nonactivated node x adjacent to the nonactivated-state neighbor node v, and otherwise the nonactivated-state neighbor node v does not change; 4, the step 2 and the step 3 are repeatedly conducted until no non-diffused activated node exists, and then the propagation process is finished. The method is applied to the field of network information propagation.

The invention discloses a naphthalimide-rhodamine-based compound. The compound is represented by general formula (I) shown in the description, and all substituent groups in the formula (I) are as defined in the description. The invention also discloses a detection composition and a detection kit of the naphthalimide-rhodamine-based compound, and a use of the detection composition or the detectionkit in the detection of mercury ions in a water environment and a biological cell system as a fluorescent probe for lysosomal targeted detection of mercury ions. The compound realizes the rapid detection of mercury ions by the fluorescent probe, has a good selectivity, and is a fluorescent probe having a chromogenic sensing function.

The invention discloses a light emitting diode with a nitrogen polar surface n-type electron barrier layer. The light emitting diode comprises a substrate, a nitrogen polar nitride layer, a polarity reversal nitride layer, an n-type nitride ohmic contact layer, the n-type nitrogen polar surface electron barrier layer, a non-doped superlattice structure layer, a multi-quantum well active layer and a p-type nitride ohmic contact layer distributed from bottom to top in sequence; and an n-type electrode and a p-type electrode are respectively arranged on the n-type nitride ohmic contact layer and the p-type nitride ohmic contact layer. The nitrogen polar surface n-type electron blocking layer can limit spatially the number of electrons entering an active region; and since a traditional p-type doped electron barrier layer is removed, the injection rate of the holes can be increased, the number of the holes and the number of the electrons injected into the active region are kept at a balanced level, and the probability of electron and hole radiation recombination luminescence in the active region can be improved, so that the performance of the light emitting diode is improved.

The invention provides a well drilling method for a horizontal well. The well drilling method for the horizontal well includes the following steps that S1, a magnetic declination value and a well track deviation value are detected; S2, the influence of the magnetic declination value on a well track deviation value signal is eliminated through a measure while drilling (MWD) system, and a return track of a drill bit is obtained; S3, a well drilling direction of the drill bit is corrected according to the return track of the drill bit; and S4, well drilling continues through the drill bit. The errors caused by magnetic declination are eliminated and the drilling direction of the drill bit is corrected repeatedly, so that the good coinciding rate of a well drilling track and a preset track is achieved.

The invention provides a reinforcing steel bar mechanical connecting device which is used for connecting a first reinforcing steel bar and a second reinforcing steel bar which are oppositely arranged, a lengthened reinforcing steel bar wire head is machined at the end of the first reinforcing steel bar, and a reinforcing steel bar wire head is machined at the end of the second reinforcing steel bar. The reinforcing steel bar mechanical connecting device comprises a threaded sleeve and a connecting sleeve, an internal thread of the threaded sleeve and a reinforcing steel bar wire head of a second reinforcing steel bar can form second threaded connection, and an internal thread at one end of the connecting sleeve and a lengthened reinforcing steel bar wire head of a first reinforcing steel bar can form first threaded connection. The internal thread at the other end of the connecting sleeve can form third threaded connection with the external thread of the threaded sleeve; a protruding shoulder is formed at the end, close to the second steel bar, of the threaded sleeve. According to the invention, a larger thread pair axial adjusting gap is formed by three pairs of matched threads, so that the probability of superposition of spiral tracks is greatly improved, and the connection of reinforcing steel bars becomes very convenient and rapid.

The invention relates to the technical field of LED illumination, and provides a multi-primary-color LED light-emitting system, which comprises a multi-channel power supply control module, light-emitting modules, a sensor and data operation module and a light uniformity control module, and is characterized in that the light-emitting modules are independently controlled by the multi-channel power supply control module through current change, the sensor and operation module can calibrate each light-emitting module by controlling the multi-channel power supply module to ensure that the spectrum of the device can coincide with a standard spectrum, and the light-emitting module comprises four single-color light-emitting modules with different colors. According to the invention, the different light-emitting modules are adopted for cooperative use so as to improve the light-emitting efficiency, the spectrum coincidence rate is improved based on mixing of the multiple different light-emitting modules, the spectrum of a T84 standard light source can be achieved through the multi-primary-color LED, and the LED light source has the advantages of environmental protection, low energy consumption, variable volume and the like, and is suitable for wide application.