​Dead Leaves Texture Test Target YE0276 for Texture Loss Analysis due to Noise Reduction

The Color SineImage Spilled Coins chart is a variant of the Dead Leaves chart designed to measure texture sharpness. It has several advantages over older Dead Leaves charts, including nearly perfect scale-invariance, which improves the accuracy and robustness of measurements, and gray regions to the left and right of the chart that facilitate noise removal (using a technique where gray patch noise Power Spectral Density is subtracted from the signal + noise PSD of the central Spilled coins region).

Shenzhen ThreeNH Technology Co., Ltd

Established in 1998, Shenzhen ThreeNH Technology Co., Ltd. is a high-tech enterprise. We research, develop, produce and market photoelectric detection products in photoelectric detection technology field and color management field. After years of intensive research, 3nh has launched NS series spectrophotometer and NH, NR series colorimeter, ISO12233 resolution test chart, optical image test solution and specific standard illuminant which are widely used in plastic, electronic, paint, ink, textile, garment, printing and dyeing, food, medical, cosmetic, optical image test industries and the field of scientific research, school and laboratory.

Our products are exported around the world. We can provide customization service which has been well received by customers.

3nh cherishes talents, focuses on talents. Company brings together many of high-level, high educated professionals. Among them, undergraduate academic staffs of the total number of company accounted for more than 80%; postgraduate staffs of the total number of company accounted for 30%. It involves the fields of photometry, electronic circuit, embedded system, photoelectric detection, mechanical structure design, optical design, application software, lighting technology electronic commerce and internet. 3nh team has strong capability to design, develop and produce on its own. The company has a large number of innovation patents, core technologies and intellectual property rights of 3nh products.

3nh adheres to “people-oriented, customer first, technological innovation, sustainable development” business philosophy to meet customer demand continuously, to create value for customers and to achieve win-win situation and common development.

3nh owns 2666 square meters with the industry's large R & D,production and marketing service base,environmental assessment report,live real shot--R&D center,laboratory,production site, marketing center,reception desk,reception room,conference room,general manager room,Quality control department,ISO quality management center,training center,exhibition center,storage base...