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47 results about "Stereoscopic acuity" patented technology

Stereoscopic acuity, also stereoacuity, is the smallest detectable depth difference that can be seen in binocular vision.

An objective evaluation method of full-reference stereo image quality based on visual salient image feature enhancement

The invention discloses an objective evaluation method of full-reference stereo image quality based on visual salient image feature enhancement. At first, a stereoscopic image is converted from an RGBcolor space to a YIQ color space, The brightness components are extracted from Y-channel to obtain disparity map and visual saliency map, and then the left and right views of Y-channel are fused to obtain the intermediate image, and then the edge/texture and depth information features with significantly enhanced vision are extracted, and similarity measurement is carried out to obtain the corresponding measurement index. Secondly, color information features are extracted from I and Q channels of stereoscopic images, binocular fusion and similarity measurement are carried out, and color information metrics with significantly enhanced vision are obtained. Finally, all the metrics are predicted by support vector regression training, and the objective quality score is obtained. Experiments show that the objective evaluation and the subjective evaluation of the stereoscopic image quality proposed by the invention have good consistency, and the performance is superior to most existing stereoscopic image quality evaluation methods.
Owner:ZHEJIANG UNIV

Method for interactively displaying stereoscopic object effect

The invention provides a method for interactively displaying a stereoscopic object effect. According to the method, powerful calculation capacity is not required, and the object can be interactively displayed with a stereoscopic spatial vision effect on stereoscopic display equipment such as a stereoscopic display, a stereoscopic Pad and a stereoscopic mobile phone. The method comprises the following steps of: (1) acquiring an image set by performing 720-degree omnibearing observation on the object in a stereoscopic space; (2) numbering all the images in the image set according to polar coordinates; (3) positioning the observation angle and distance on the interactive equipment; (4) generating an image sequence which is respectively conveyed to the left and right eyes according to the corresponding angle and distance change; and (5) displaying a stereoscopic visual effect. The image sequence is only required to be obtained according to an algorithm, and powerful calculation capacity is not required, so that the interactive display can be realized on the stereoscopic equipment, and an excellent stereoscopic impression is guaranteed. The object can be rotated, dragged, pulled to a close part and subjected to other operations in the stereoscopic space.
Owner:HANGZHOU QUNHE INFORMATION TECHNOLOGIES CO LTD

Image three-dimensional representation method based on parallax hierarchical segmentation, and system

ActiveCN104820981AIntuitive deep featuresImage enhancementImage analysisParallax3d image
The invention discloses an image three-dimensional representation method based on parallax hierarchical segmentation, and a system. Firstly, parallax information of 3D images are obtained by utilizing an existing parallax estimation algorithm; secondly, depth direction quantized intervals are determined according to stereoscopic visual acuity of the visual sense and complexities of image contents in the depth direction, and different depth plane segmentation methods are established; a parallax map is segmented relying on depth intervals according to the quantized intervals determined by various depth planes, and image segmentation templates corresponding to the various depth planes are formed; and, finally, an original image is segmented by utilizing the image segmentation templates of the various depth planes, image contents obtained through segmentation are located on the corresponding depth planes and are redrawn on various planes of the corresponding depth spaces, and a depth space distributed three-dimensional representation manner corresponding to the image is formed. The original image is segmented based on the parallax information of the 3D images, and inner depth information of image objects in various depth intervals in the 3D images is significantly and visually representated.
Owner:SHANGHAI JIAO TONG UNIV

Structure texture sparse representation based objective assessment method for stereoscopic image quality

InactiveCN105321175ANo need to predict the subjective evaluation valueAvoid learning the training processImage enhancementImage analysisComputation complexityTraining phase
The present invention discloses a structure texture sparse representation based objective assessment method for stereoscopic image quality. The method comprises: in a training phase, performing separation of structure and texture on left view point images of a plurality of distortion stereoscopic images, performing dictionary training on a collection constructed by sub blocks of all structural images through an unsupervised learning mode to obtain a structure dictionary table, and performing dictionary training on a collection constructed by sub blocks of all texture images to obtain a texture dictionary table. In a test phase, according to the structure dictionary table and the texture dictionary table, performing joint optimization to obtain a structure sparse coefficient matrix and a texture sparse coefficient matrix, and calculating an image quality object evaluation value of the distortion stereoscopic images, so that an excellent consistency is maintained with a subject evaluation value, the structure dictionary table and the texture dictionary table do not need to be calculated again in the testing phase, calculating complexity is reduced, and the subjective evaluation value is not needed to be foreseen, and thus the method is applicable to practical application occasions.
Owner:江苏追梦信息科技有限公司

Assembled LOFT apartment

The invention discloses an assembled LOFT apartment. An interlayer is arranged in a stereoscopic space to divide the stereoscopic space into a first-layer space and a second-layer space, the ground of the first-layer space is upwards provided with a tilted stairway which is connected with the interlayer and used for achieving traffic connection between the first-layer space and the second-layer space, an interlayer area connected with the top of the stairway is downwards provided with a sinking type carrying platform used for allowing a user to stand, and the sinking surface of the sinking type carrying platform is lower than the lower surface of the interlayer and higher than the top-layer stepping plate of the stairway. The sinking type carrying platform structure is ingeniously designed for the problems that a person is prone to head collision and difficult to stand when the person goes up the stairway on the condition that the effective height is smaller than 4 meters, the distance between the sinking surface of the sinking type carrying platform and the upper top surface of the stereoscopic space is 178-200 cm, therefore, the problems that uneasiness exists and head collision occurs when the person goes up the stairway due to the fact that the floor height is limited are effectively avoided, and the comfortableness and convenience are improved. The assembly-detachable installing mode is adopted, industrialized production is achieved, and the quality is reliable.
Owner:SUZHOU COZY HOUSE EQUIP

A stereoscopic image representation method and system based on parallax layered segmentation

ActiveCN104820981BIntuitive deep featuresImage enhancementImage analysisParallaxStereoscopic acuity
The invention discloses an image three-dimensional representation method based on parallax hierarchical segmentation, and a system. Firstly, parallax information of 3D images are obtained by utilizing an existing parallax estimation algorithm; secondly, depth direction quantized intervals are determined according to stereoscopic visual acuity of the visual sense and complexities of image contents in the depth direction, and different depth plane segmentation methods are established; a parallax map is segmented relying on depth intervals according to the quantized intervals determined by various depth planes, and image segmentation templates corresponding to the various depth planes are formed; and, finally, an original image is segmented by utilizing the image segmentation templates of the various depth planes, image contents obtained through segmentation are located on the corresponding depth planes and are redrawn on various planes of the corresponding depth spaces, and a depth space distributed three-dimensional representation manner corresponding to the image is formed. The original image is segmented based on the parallax information of the 3D images, and inner depth information of image objects in various depth intervals in the 3D images is significantly and visually representated.
Owner:SHANGHAI JIAOTONG UNIV

Binocular stereoscopic vision type food identification method

The invention discloses a binocular stereoscopic vision type food identification method. The binocular stereoscopic vision type food identification method comprises the following steps: S1, acquiringan image 1 and an image 2 of food images by utilizing double cameras; S2, selecting K reference points and reading pixel coordinates; calibrating a distance relation between the reference points and the cameras; S3, calculating inner and outer parameters of the cameras and carrying out binocular correction on the images which are acquired through the double cameras according to the inner and outerparameters; S4, carrying out stereoscopic matching on the images and calculating a disparity map; calculating a depth map according to the disparity map; S5, carrying out characteristic extraction according to the depth map; obtaining an identification result after carrying out the characteristic extraction. According to the binocular stereoscopic vision type food identification method disclosedby the invention, the food image is acquired at different angles through setting the double cameras and a stereoscopic space is established on the basis of two angle information; overlapped and shielded foods are recognized in the stereoscopic space, so that the problems in a food identification process of a single camera at present are solved.
Owner:广州市派客朴食信息科技有限责任公司

Stereoscopic site

InactiveCN108457502AGuaranteed reasonable useStrong use of the playgroundGymnasiumSheet steelStereoscopic acuity
The invention relates to the field of the sports field construction and in particular to a stereoscopic site. The stereoscopic site comprises a plurality of vertical steel frames. The vertical steel frame comprises a steel column, and a first beam and a second beam welded with the steel column. The upper ends of the first beam and the second beam are welded with a plurality of annular steel frames. The upper ends of the annular steel frames are fixedly provided with a steel plate through rivets. The middle of the steel plate is provided with a rectangular box. The interior of the box is covered by a sound-insulating layer. An annular runway is installed around the rectangular box. One side of the vertical steel frame is welded with a staircase. The lower ends of the vertical steel frame are fixed under the ground, so an underground moving space is formed between an underground space and the vertical steel frame. The inner sides of the vertical steel frames are surrounded by an insulating protecting net. The underground moving space is provided with a stair-shaped spectator stand. The stereoscopic site is capable of guaranteeing the rational application of a sports field, and constructing according to the actual needs. A utilization ratio of the sports field is high, the stereoscopic site accords with a modern standard, the constraint of a traditional old sports field is broken,a popularization range is extensive, and the stereoscopic site can be extensively adopted.
Owner:QILU UNIV OF TECH

Stereoscopic multi-layer ship stopping device

Disclosed is a stereoscopic multi-layer ship stopping device. The device comprises a supporting frame, speed-regulating motors, motor sprockets, shaft sprockets, transmission chains, transmission shafts, ship bearing boards, connecting frames, tracks, track wheels, a lifting sprocket and a lifting chain; the supporting frame is of an n-shaped structure, and the speed-regulating motors are installed at the top of the supporting frame; the motor sprockets are installed on the speed-regulating motors, the transmission shafts are installed at the top of the supporting frame and provided with the shaft sprockets, and the two motor sprockets are connected with the two shaft sprockets through the transmission chains respectively; the connecting frames are installed at the edges of the middles ofthe two ship bearing boards, the track wheels are arranged at the outer edges of the connecting frames, and the tracks are arranged on two vertical columns of the supporting frame. Through the arrangement of the stereoscopic multi-layer ship stopping device, multiple ships can be stopped in one space, and the ship stopping space is greatly saved; through full-automatic control, ship stopping is more stable, vibration generated during running is greatly reduced to the greatest degree, and the device is safer and more reliable.
Owner:河南格瑞捷智能停车装备有限公司
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