Spilled Coins Cross Test Chart

Key aspects of the Imatest Spilled Coins Cross chart: It boasts a 3:1 pattern reflectance range contrast, with an 18% gray background adhering to CPIQ's new standards. Eight registration marks surround the active area for precise reference-to-test image transformation. Sixteen grayscale OECF patches are included for linearization before texture response calculation. The chart features slanted edges (2:1 and 4:1 contrast) for easy Texture MTF and slanted-edge MTF comparisons. It maintains flat areas of consistent mean reflectance on either side of the center area for classic Direct Texture MTF method Noise Power Spectral Density estimation. Its pattern design is more uniform and shift-invariant than other vendors' Dead Leaves charts. The chart sizes include: Large (12305 mm x 305 mm, 22.4 x 16.8569 mm, 22.9 x 17.3582 mm), Medium (8203 mm x 203 mm, 14.93 x 11.2379 mm, 15.43 x 11.7392 mm), and Small (6152 mm x 152 mm, 11.2 x 8.4284 mm, 11.7 x 8.9297 mm). Learn more about Random/Dead Leaves Cross chart analysis.

• Key Features of Imatest Spilled Coins Cross Chart:
• Pattern Reflectance Range Contrast: 3:1 with 18% Gray Background (CPIQ Standards)
• Eight Registration Marks for Precise Image Transformation
• 16 Grayscale OECF Patches for Linearization
• Slanted Edges (2:1 & 4:1 Contrast) for MTF Comparisons
• Backward Compatibility: Flat Areas for Noise Power Spectral Density Estimation
• Uniform Pattern Design: More Shift-Invariant Than Other Dead Leaves Charts
• Spilled Coins Cross Chart
• Available in Different Sizes
• Learn More About Random/Dead Leaves Cross Chart Analysis