Color-Co-Site Sampling Explained

The ProgRes® C14plus cameras utilize color-co-site sampling to gather more relevant information from the specimen being observed. This extra information is used to examine the finest structures and measures the full true color information of the specimen, thus increasing spatial resolution.

When using research grade cameras color is an important part of specimen research. Therefore, the more information gathered, the more reliable the work and the better you are able to achieve reproducible results. Standard cameras reproduce color by interpolation. Color-Co-Site Sampling goes a step beyond interpolation.



Interpolation is a method of numerical mathematics. Each pixel is only able to detect one color - red, green or blue. A camera that utilizes interpolation would capture an image and record one color for each pixel. If a pixel is missing, a math formula is calculated (or interpolated) to determine that pixel's color based on the values of the neighboring pixels. As an unwanted side-effect, sometimes artifacts such as color moiré or false colored pixels near edges or in fine image details can occur. This is avoided with Color-Co-Site Sampling.

Color-Co-Site Sampling


Color-Co-Site Sampling uses four, sixteen or thirty-six shots for true color reproduction. Microscanning allows the image sensor to shift so it sees both pixels and sub-pixels. During this scanning process each red, green and blue value is being measured, so no interpolation is needed. The four, sixteen or thirty-six shots that were captured are combined into the final image, resulting in a sharp image with true colors for more accuracy. Additionally, more color and detail information from between the pixels is captured. In standard cameras that use interpolation, information from between the pixels is never captured. In the 16-shot and 36-shot modes, final image resolution can be increased as well.