In this letter, different from traditional methods using original spectral features or handcraft spectral-spatial features, we propose to adaptively learn a suitable feature representation unlabeled data. This is achieved by learning mapping function based on stacked sparse autoencoder. Considering that hyperspectral imagery (HSI) intrinsically defined in both the and spatial domains, further establish two variants of procedures for multiscale learning. Finally, embed learned into linear...

Many authoritarian regimes lack an independent judiciary. This article studies the effect of firms' political connectedness on court outcomes using a unique hand-collected data set 3,323 commercial lawsuits involving listed companies in China. We find robust evidence that Chinese courts favor state firms and private with personal ties. The positive is pronounced litigation but not arbitration less regions better legal institutions. also locally connected are favored their home when case...

The hot deformation behavior, dynamic recrystallization mechanism and processing maps of Ti-V complex microalloyed high strength steel under temperatures ranging from 840 to 1040 °C strain rates varying 0.01 10 s-1 were studied by using thermal-mechanical simulation (Gleeble-3800), optical microscopy (OM), electron backscatter diffraction (EBSD). true stress-strain curves the investigated obtained different conditions, thermal activation energy was calculated, constitutive equations based on...

The ZiYuan-3 (ZY-3) remote sensing satellite is China's first civilian high-resolution stereo mapping satellite. Because the interior orientation parameters measured before launch are biased, multispectral (four-band) images collected by ZY-3 exhibit low-accuracy band-to-band registration, which affects their subsequent applications. This paper presents a valid method for determination of sensor determining look angles charge-coupled device arrays all bands. One band chosen as benchmark...

ZiYuan-3 (ZY-3) surveying satellite is China's first civilian high-resolution stereo mapping satellite. The satellite's objective oriented towards plotting 1:50,000 and 1:25,000 topographic maps. Compared with using foreign commercial imagery, establishment of the image geometry model core technical problem for different products various applications ZY-3 This article analyses key problems high-precision processing based on overall design, proposes technology virtual CCD line-array imaging....

The ZiYuan-3 surveying satellite (ZY-3) is a high-precision civilian imaging sensor. Since its launch on January 9, 2012, it has been in operation for one and half years. Although the initial postlaunch ZY-3 geometric accuracy was verified during an in-orbit period, on-orbit calibration still necessary from time to time. This vastly improved location planimetry panchromatic images. letter briefly describes principle of production processes sensor-corrected products. Furthermore, block...

The conflict of interests between controlling and minority shareholders is an important issue in firms with concentrated ownership. We document that the shareholders' expropriation behavior through tunneling or self-dealing much severer politically connected firms. results are not due to high tendency establishing connection for protection, but because a less concern capital market punishment. show only whose political secures bank loan access. These findings consistent view firms' financing...

Abstract The ZiYuan‐3 surveying satellite ( ZY ‐3), launched on 9th January 2012, is China's first civilian high‐resolution stereo mapping satellite. To ensure the accuracy of ‐3, considerable research has been conducted since its launch calibration and validation three‐line array charge‐coupled device CCD ) sensors TLC sensors). Its dynamic exterior systematic errors (such as camera installation errors) static interior distortion were eliminated using 1:2000 digital orthophotomaps elevation...

Since the adoption of rational polynomial coefficient (RPC) adjustment model as a preferred sensor orientation for high-resolution optical satellite imagery, it has been demonstrated to be effective and robust. However, no publication discusses application RPC 3-D intersection from SAR stereoscopic pairs. This paper aims validate spaceborne orientation. Initially, brief summary mathematical background is presented. Then, errors are analyzed, namely, parameters, having same net effect on...

Given that long strip satellite images have the same error distribution characteristics, we propose a block adjustment method for based on constraint. First, image point coordinates are calculated in coordinate system offset value of adjacent image. Second, rational function model (RFM) is regenerated using RFM single images, and compensation grid also generated. Third, implemented with an affine transformation parameter. Finally, parameters recalculated Experiments ZY-3 showed constraint...

Many freely available global or quasi-global digital elevation model (DEM) datasets, including Advanced Land Observing Satellite (ALOS) World 3 Dimensions (3D) 30 m DEM (AW3D30 DEM), Spaceborne Thermal Emission and Reflection Radiometer (ASTER Shuttle Radar Topography Mission (SRTM Multiple-Error-Removed-Improved-Terrain (MERIT TerraSAR-X add-on for Digital Elevation Measurement (TanDEM-X) (TanDEM-X are extremely useful products many applications, so it is necessary to make a reasonable...

Abstract The ZiYuan-3 satellite (ZY-3) was China’s first civilian stereo mapping designed to meet the 1:50 000 scale requirements. We analyzed main error sources influencing geometric accuracy of ZY-3 images, and propagation rules these in image production. Accuracy estimation models images without ground control points (GCPs) were deduced theoretical obtained. Without GCPs, 556 panchromatic nadir covering 3,500,000 km 2 Chinese mid-west region 12 pairs 14,000 km around Taiyuan China used...

Geolocation accuracy is a critical issue for remote sensing applications. To achieve subpixel accuracy, geolocation errors need to be systematically identified and corrected. In this study, we propose geometric sensor model FengYun-3D (FY-3D) MERSI-II, second-generation visible (VIS)/infrared (IR) spectroradiometer, generate the lookup table (GLT). The retrieves imaging rays from focal plane K-mirrors, 45° scanning mirrors, platform, earth's surface. After refining attitude with ground...

Attitude models play a prominent role in the geometric processing of high-resolution satellite imagery (HRSI). Because high accuracy matching algorithm, attitude oscillations can occur HRSI. Various methods for correcting this oscillation with parallax observations have been proposed. However, few researchers attempted to model from records or taken noise into consideration. In paper, penalized spline-based is proposed, which piecewise and continuously differentiable polynomials smooth out...

At present, some mapping satellites, such as GaoFen-7 and ZiYuan3-03, are equipped with both optical stereo cameras laser altimeters that can synchronously obtain images sparse ground altimetry points (LAPs). To effectively improve the geometric accuracy of these satellite images, this study proposed an integrated processing method for LAPs derived from same satellite. This makes full use advantages obtaining LAPs, designs measurement technology accurate pixel coordinates in which works...

Purpose Given the significance of innovation in enabling firms to maintain a long-term competitive edge and secure excess profits, this paper aims investigate whether how stakeholders’ attention (SATI) influences corporate innovation. Design/methodology/approach This introduces novel variable, SATI, which is achieved by segmenting into two categories: other facets, using textual analysis methods. Subsequently, empirically examines influence SATI on Findings finds that positively affects...

Abstract. Due to the influence of image differences and matching methods, geometric calibration remote sensing images often results in extraction control points with inevitable outliers. Moreover, it is susceptible limitations imposed by locally constrained outlier rejection making challenging automatically remove relatively small gross errors. This paper introduces an adaptive parameter local consistency automatic removal algorithm, referred as APLC. Initially, we construct k-nearest...

The attitude accuracy of high-resolution satellite images is the main factor affecting their geometric positioning accuracy. Bundle block adjustment method for realizing simultaneous estimation models overlapping over a large area. In current research on joint multi-line array images, usually carried out with view or load as unit without considering consistency error same platform. this paper, we develop self-calibration strip bundle scheme that considers boresight misalignment among...

This paper examines the expropriation of tradable shareholders in rightsissuing firms with split share structure China. Using a sample 444 rights issues from 1999 to 2004, we find that change wealth is negatively correlated nontradable shareholders, consistent an effect. Additional evidence indicates effect exacerbated when firm not ultimately controlled by government, do subscribe shares issues, or has large second-largest shareholder.