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700 results about "Image evaluation" patented technology

Apparatus and method for measuring dynamic target modulation transfer function

The invention relates to a dynamic object modulation transfer function measuring method and a device thereof, pertaining to the optical property measurement field. The invention aims at providing a dynamic object modulation transfer function measuring method and a device thereof which can carry out the dynamic object modulation transfer function measurement under different fields of view, namely, uniform linear motion, uniformly-accelerated rectilinear motion, simple harmonic motion, but also can measure static target modulation transfer function and separate the static target modulation transfer function from whole machine modulation transfer function. The device consists of a light source, a collimating lens, a pupil coupling system and an electro-optical imaging system which are arranged along the ray propagation direction in sequence; the electro-optical imaging system carries out imaging towards the light source moving along the guide rail direction and line spread function is obtained from the image and carried out one-dimensional Fourier transformation so as to obtain the dynamic object modulation transfer function. The method and the device of the invention are not only suitable for static image evaluation field but also for the image evaluation field of dynamic object imaging by a time-delay electro-optical imaging system.
Owner:江苏亚星波纹管有限公司

A multi-attribute image aesthetics evaluation system based on attention mechanism

ActiveCN109544524ALanguage evaluation is objective and comprehensiveGrammaticalImage enhancementImage analysisPattern recognitionData set
The invention provides a multi-attribute image aesthetics evaluation system based on attention mechanism. Using machine learning methods, A composite neural network model is trained by using large-scale photograph dataset and corresponding comment information, this model can extract the multi-attribute aesthetic features of image effectively by convolution operation, the image features are extracted from the multi-attribute feature extraction network of the model, Features are further processed in the channel and spatial attention network, and finally the final comments are generated in the language generation network through the long-short memory network unit. The model can automatically output comments of different attributes according to the image characteristics. When an image is inputted, the generated model considers the characteristics of the image from different attributes and evaluates the aesthetic quality of the image in natural language. The method is easily realized by software, and the invention can be widely applied to computer vision, image evaluation and the like.
Owner:中共中央办公厅电子科技学院

Evaluating driver walk distances and building types using overhead imagery

A method of determining a distance to be walked by a delivery vehicle driver including providing a satellite image that has an image of a building to which an item is to be delivered and an image of a street adjacent to the building. The method further includes defining a path, within the image, that corresponds to a path that the delivery vehicle driver will walk when delivering the item to the building. The method also includes the step of determining a length of the path.
Owner:UNITED PARCEL SERVICE OF AMERICAN INC

Robust mechanism research method of characteristic significance in image quality evaluation

The invention discloses a robust mechanism research method of characteristic significance in image quality evaluation. The robust mechanism research method comprises the following steps: firstly, determining a target function of characteristic selection in the image quality evaluation, and initializing a model parameter; secondly, adding an optimal characteristic into a characteristic matrix, and removing a characteristic disturbance term; thirdly, calculating the significance of the characteristic selection in an image quality evaluation system; fourthly, judging whether the significance meets a system robust requirement or achieves an upper limit of a characteristic number; and finally, verifying a model classification effect. The characteristic significance is measured through an imported system characteristic signal to noise ratio, a constrained optimization problem of a smooth convex function in the image quality evaluation system is solved, interference on a classification face by non-significant characteristics is effectively lowered, the robustness of the image evaluation system is improved, and the self-adaptive optimization problem of characteristic attribute selection on the basis of an image quality evaluation network of a learning mechanism is solved.
Owner:SOUTH CHINA AGRI UNIV

Deblurring and supervised adaptive thresholding for print-and-scan document image evaluation

A method is described to obtain a binary image from the print-and-scan process to best match the known original. A point-spread function (PSF) of the PAS process is first obtained from its knife-edge responses, and deblurring is carried out on the scanned images using deconvolution. After image deskewing and preliminary registration, a supervised adaptive thresholding procedure is utilized to binarize the scanned image such that a measure of difference (e.g. the Euclidean distance) between the original and binarized images is minimized. The supervised adaptive thresholding procedure divides the scanned images into many rectangular sub-images. Otsu's method is used to find a starting threshold for each scanned sub-image. An optimal threshold is found around the Otsu's threshold via iterative search to minimize the measure of difference between the original sub-image and scanned sub-image. The sub-images are binarized using the optimal threshold. This method may be used in document authentication.
Owner:KONICA MINOLTA LAB U S A INC

Method and device for examining the skin

For efficient detection or observation of a skin disease, especially skin cancer, methods for examining the skin (2) of a subject (3) and an associated device (1) are specified. Accordingly a camera element (20) is provided, by means of which an image (B, B′) of an area of skin (35) is recorded. The image (B, B′) is fed to an image evaluation unit (30) which uses electronic pattern recognition based on at least one prespecified selection rule (A) to analyze the image (B, B′) for the occurrence of suspect skin marks (37a, 37b) with, on detection of a suspect skin mark (37a, 37b), its location being determined and displayed.
Owner:SIEMENS HEALTHCARE GMBH
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