Detection of weeds and crops is the key step for precision spraying using herbicide robot precise fertilization agriculture machine in field. On basis k-mean clustering image segmentation color information connected region analysis, a method combining multi feature fusion support vector (SVM) was proposed to identify detect position corn seedlings weeds, reduce harm on growth, achieve accurate fertilization, thereby realizing weeding or fertilizing. First, dataset weed seedling...

A novel four-degree-of-freedom (DOF) parallel manipulator (PM) with two-translations and two-rotations (2T2R) is presented. The has four limbs containing two adjacent RPU SPS limbs, connecting the base to moving platform. Using constraint screw theory, motion of are analyzed, furthermore singular configuration carefully discussed. can be developed for 4-axis machine tool, damping device, vibrating screen so on.

Feature generating networks face to the most important question, which is fitting difference (inconsistence) of distribution between generated feature and real data. This inconsistence further influence performance model, because training samples from seen classes disjointed with testing unseen in zero-shot learning (ZSL). In generalization (GZSL), come not only but also for closer practical situation. Therefore, difficultly obtain satisfactory challenging GZSL by adversarial semantic...

A quadtree with nested multi-type tree structure has been integrated into the latest versatile video coding (VVC) pursuing a higher efficiency for more flexible representation in content. But great complexity would also cause bottleneck VVC all-intra application, where encoder computes rate-distortion (RD) costs of all possible block modes to decide optimum mode. To address this issue, an efficient and fast CTU partitioning scheme is proposed skip partial unnecessary some tools. Here...

Existing zero-shot learning (ZSL) methods usually learn a projection function between feature space and semantic embedding space(text or attribute space) in the training seen classes testing unseen classes. However, cannot be used multi-semantic spaces, which have diversity characteristic for describing different information of same class. To deal with this issue, we present novel method to ZSL based on class label autoencoder (CLA). CLA can not only build uniform framework adapting but also...

The latest generation of standard versatile video coding (VVC) continues to utilize hybrid architecture further promote compression performance, where the intra-mode decision module selects optimal mode balance bitrate and distortion. With regard chroma intra modes, a scheme that uses cross-component linear model (CCLM) is involved by utilizing component correlation between luma chroma, which could implicitly introduce distortion propagation from blocks subsequent prediction during coding,...

A novel three degree-of-freedom (DOF) fully-decoupled parallel mechanism (PM) with one-translational and two-rotational (1T2R) DOF is presented. First, the calculation of input selection are performed. Next, direct inverse kinematic problems analyzed. Finally, singularity conditions discussed systematically based on Jacobian matrices. The motion fully decoupled for matrix being a triangular matrix. Thus, it simpler in aspects control trajectory planning mechanism.

When the object is similar to background, it difficult segment completed human body from video images. To solve problem, this paper proposes an segmentation algorithm based on guided layering This adopts structure of advance by degrees, including three parts altogether. Each part constructs different energy function in terms spatiotemporal information maximize posterior probability label. In one, functions are established, respectively, with frame difference first layer and second layer. By...

Interpreting real-world images require the ability distinguish different characteristics of scene. Reflectance are invariant under illumination conditions, they more appropriate for some applications, such as object detection, recognition. Shading can be used research fields analysis scene and color constancy. shading components image represented by intrinsic images. In this paper, processing including specular reflection a variety shadows, an algorithm is presented that uses multiple cues...