CP355 is a precision combined real-scene chart for subjective camera assessment. Bonded real props provide color,texture,sharpness,portraits,scenery,line pairs and text. With fill lighting,it simulates some outdoor conditions. Tests include resolution,near-infrared sensitivity,moire,color reproduction,motion blur,texture loss,lighting detail,distortion,known natural colors,HDR,sharpening,shadow detail,skin tones and low-contrast detail. CP355-R4X integrates real objects/textures/visual elements on one substrate to represent complex information that traditional2D charts cannot fully reproduce. Different regions enable intuitive evaluation across these dimensions; varied fill lights simulate outdoor illumination for analysis at different light levels/conditions.
| Parameter | Value |
| Card Size | 1600 mm × 1000 mm |
| Test Method | Subjective visual evaluation / reality-based simulation |
| Production Mode | Physical proprietors |
A single chart integrates color, texture, sharpness, line pairs, text, portraits and natural scenes for multidimensional subjective image-quality assessment. Attached physical props reproduce scenes with more realistic visual information and texture than conventional two-dimensional printed charts. Designed around common camera-tuning and evaluation issues, it supports subjective comparison of color, sharpness, texture, skin tone, dynamic range and shadow detail. The 1600×1000mm substrate provides extensive laboratory test regions. Different supplementary light sources can simulate some outdoor illumination conditions for evaluating cameras under varied lighting.
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Yanding, as a nationally recognized high-tech enterprise, has always been driven by technological innovation and deeply engaged in the fields of testing equipment and image quality.
The company is headquartered in Zhangjiang Qingpu Park, with its core office base located in Shanghai Zhangjiang Science City, an innovation highland. It has also established R&D and operation centers in Shenzhen, Beijing, and South Korea, building a global technology R&D and service network to efficiently respond to domestic and international customer needs.
For many years, Yanding has focused on technological breakthroughs in the field of image quality. Its main business covers the full-chain R&D, design, manufacturing, and sales of high-precision instruments, high-end mass production equipment, image analysis algorithms, and industrial software. Relying on more than ten years of deep accumulation in core technology fields such as ultra-complex hardware boards and platform-level industrial software, the company has formed full-stack self-research and delivery capabilities from high-precision optical instruments, image quality analysis and calibration algorithms, to motion control software, optical lenses, image acquisition boards, image test charts, and mass production testing equipment, providing customers with end-to-end solutions.
The founding team and core members bring together senior technical management talents from well-known domestic and overseas enterprises, with an average of over 20 years of frontline R&D and operation management experience, and a deep understanding of international cutting-edge technology paths and industry trends. The company has assembled an R&D team composed of talents from famous domestic and overseas universities, highly skilled and continuously pursuing innovation. As of the end of 2024, the company has more than 170 employees, with R&D and technical personnel accounting for over 60%, injecting strong momentum into continuous technological breakthroughs and global market expansion.