最新刊期
期 4 ， 2018
- 摘要：
CdSe/CdS quantum rods (QRs) with polarized light emission have great potential in the next generation liquid crystal displays (LCD) backlight. Aligning these QRs in large scale is the key for practical applications. In this paper, we report a large scale film made of aligned QRs in PMMA fibers. Making use of a new tributylphosphine (TBP)-assisted synthetic method, we firstly synthesized uniform CdSe/CdS QRs with high absolute quantum yield (QY) of 60%, narrow full width at half maximum (FWHM) of 25 nm and l 关键词：quantum rods;polarization;electrospinning;alignment- 404
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- 36
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- 1
发布时间：2020-07-06 - 摘要：
With the development of display industry, market has the higher requirement of products quality. Especially for vehicle display field, the brightness of backlight is almost more than 10000 cd/m2, which may enlarge small defects in display screen to impact display quality. As black uniformity is a crucial characteristic of image quality, the investigation of the structure and designing of liquid crystal display module which can generate black light leakage have been in progress for optimizing uniformity of b 关键词：TFT-LCD;black uniformity;institutional interference;FPC stress- 426
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- 65
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- 2
发布时间：2020-07-06 - 摘要：
In order to solve the line image sticking issue of TFT-LCD, the data of coupling voltage between the data lines and the common electrode as well as the influencing factors were studied. By using metal welding technology, the common voltage (Vcom) distortion induced by signal voltage was measured and compared with the severity of the line image sticking. At the same time, the different influencing factors such as the mask design, the amplitude and frame change frequency of the signal, the TFT process and the 关键词：common voltage distortion (Vcom distortion);overlap and side capacitance;permittivity;line image sticking- 369
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- 75
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- 1
发布时间：2020-07-06
Material and Device
- 摘要：
Color performance of the monitor varies with time and environmental conditions. In this paper, the color performance of the monitor is chosen as the research object, and a systematic test is designed. An orthogonal test is used to analyse that how the color temperature, brightness and Gamma value affect the color ability of EIZO ColorEdge color CG247 and Dell P2714H, and determine a best calibration conditions for them. Furthermore, we test the spatial uniformity and time stability of the monitors, which is 关键词：color performance;calibration;color difference;spatial uniformity;time stability- 294
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- 15
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- 0
发布时间：2020-07-06 - 摘要：
Satellites are subject to the interference of the atmosphere and electromagnetic wave when obtaining ground information, resulting in the occurrence of bad lines and noise in the hyperspectral image itself. In response to this problem, this paper, taking the characteristics of hyperspectral remote sensing images into account, presents an image reconstruction method based on the combination of hyperspectral and band classification. Firstly, according to the level of noise, the image band is classified as two 关键词：compressive sense;compound regular;space combination;high frequency correction- 300
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- 18
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- 2
发布时间：2020-07-06 - 摘要：
In order to improve the reliability of the test of air and ground explosion point coordinate in shooting range, and reduce or eliminate the influence of gross error effectively, the multi-station intersection algorithm of robust estimation was proposed. Firstly, the principle of traditional least square multi-station intersection was introduced. Then, the principle of robust estimation method and the calculation method of internal and external reliability index were introduced. Finally, the correctness of t 关键词：gross error;robust estimation;reliability index- 300
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- 15
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- 3
发布时间：2020-07-06 - 摘要：
Key point detection plays an important role in the process of 3D face recognition. In order to improve the accuracy of key points detection, a new method of 3D face key points detection based on multi feature is proposed. Firstly, the key points of the 3d face of the training set are manually marked, and the different eigenvalues of each point of 3D face are calculated, and the mean and variance of each feature are obtained for each key point. Secondly, the linear discriminant analysis is carried out on the 关键词：effective energy;nasal tip detection;posture correction;geodesic distance;iterative closest point;principal component analysis;classifier- 345
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- 15
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- 1
发布时间：2020-07-06 - 摘要：
A deep convolutional neural network based method is adopted to detect objects such as tower, glass insulator and composite insulator in visible images of transmission lines. About 600 visible images of 19 different transmission lines are captured by manned helicopter with high-definition camera. All of the images are then annotated manually and segmented into blocks with 4 different labels:background, tower, glass insulator and composite insulator. These blocks are then augmented to around 150 000 training 关键词：transmission line image;insulator;object detection;deep learning;convolutional neural networks- 313
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- 19
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- 5
发布时间：2020-07-06 - 摘要：
In this paper, an algorithm is proposed to design white LED array for uniform distribution of the correlated color temperature (CCT) on the target surface. The color temperature distribution of LED array on the target surface can be calculated by superposition of color temperature superposition from different LEDs in the array. A merit function is constructed which reflects the uniformity of CCT distribution. The value of the merit function depends on all LED positions. By optimizing all LED positions, the 关键词：illuminating engineering;LED array;color temperature;uniformity;merit function- 334
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- 24
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- 5
发布时间：2020-07-06 - 摘要：
In order to solve the ill-posed problem in the process of reconstructing the spectral reflectance using the traditional matrix R method, an improved matrix R method was proposed in this paper. The Tikhonov regularization method was researched to restrict the ill-posed problem to solve the Moore-Penrose pseudo inverse matrix. The L-curve method was used to obtain the optimal regularization parameter by training samples data in order to effectively restrict the ill-posed situation. The experimental results ve 关键词：spectral reflectance reconstruction;matrix R;Tikhonov regularization;color reproduction- 321
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- 15
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- 1
发布时间：2020-07-06 - 摘要：Aiming to the automatic screening of cervical cytopathological images, an artificial intelligence based automatic diagnosis-assisted method was proposed. First of all, adaptive dual threshold method was used to detect the cervical cytopathological images initially. Secondly, improved Chan-Vase model was used to precisely extract different areas of adhesive cell cluster. After that, the related feature set was built according to the diagnostic rules of pathological experts. At last, neural network ensemble was applied to normal or suspected lesions two-classification recognition. The result of the experiment showed that cervical cell lesions could be effectively distinguished according to classification with this method, which had high accuracy (84%) and low rate of misjudgment (2.1%), meeting the practical requirement of pathological diagnosis, which is reducing the miscalculating of the suspected lesions to normal ones, meanwhile assuring the diagnostic accuracy.关键词：cervix;cytopathology;screening test;neural network ensemble;computer-aided diagnosis
- 351
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- 19
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- 2
发布时间：2020-07-06 - 摘要：
Steady-State Matching Probability (SSMP) stereo matching algorithm will generate hole phenomenon in the test charts with large parallax. And the correct disparity will be lost in the left disparity map due to the wrong parallax in the right disparity map after using the algorithm. In order to solve these problems, a stereo matching algorithm based on the combination of SSMP and semi-global matching (SGM) is proposed. First, the initial disparity map is obtained by using the SSMP algorithm. Next, the dispari 关键词：machine vision;stereo matching;matching probability;hill-climbing algorithm;SGM- 344
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- 15
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- 2
发布时间：2020-07-06
Image Processing
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