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We focus on the non-Lambertian object-level intrinsic problem of recovering diffuse albedo, shading, and specular highlights from a single image of an object. Based on existing 3D models in the ShapeNet database, a large-scale object intrinsics database is rendered with HDR environment maps. Millions of synthetic images of objects and their corresponding albedo, shading, and specular ground-truth...
Hybrid digital/analog precoding has been widely utilized in millimeter-wave (mmWave) multiple-input multiple-output (MIMO) systems. Compared to the digital precoder, it is more challenging to design the analog precoder because of the constant amplitude (CA) constraints on the entries. Although high-resolution analog phase shifters (APSs) can provide more choices in phase adjustment, it also adds the...
Millimeter wave (mmWave) communication is favored for its abundant bandwidth. However, the sampling rate scales up with the large bandwidth, thus making it difficult to implement high-resolution analog-to-digital converters (ADCs). In addition, a large-scale array is employed to overcome the high path loss of the mmWave channels. Due to the large number of antennas and the directional feature of the...
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