Insight into the Rencay technology: trilinear scanning process and multiscan technology
The figure shows a schematic of the high-resolution line sensor used. The trilinear sensor has 3 individual lines with RGB color filters. With this method, the complete RGB color information with 48Bit color depth (trueRGB48Bit) is obtained for each pixel.
The generated color image is immediately available without further calculations. The achieved image quality does not depend on the image content.
The key to resolution - The Rencay MultiScan process allows the basic resolution of the trilinear scanner to be increased through flowing and highly precise movements of the sensor in the X and Y directions. The Rencay scanners achieve extremely high resolutions. It can be used wherever large formats are digitized in high resolution or where special attention must be paid to the fine details in the scanned image.
The MultiScan process is used in the 16k³ and 24k³ models.
A one-shot digital camera system (from cell phones to medium format cameras) uses a 2-dimensional area sensor. Since this sensor initially only has monochrome pixels, it is equipped with a Bayer color filter matrix. A color image can thus be obtained in a single exposure. 50% of the pixels are green-sensitive and 25% red and blue-sensitive.
The color image is calculated using computationally intensive interpolation algorithms. The quality of the color image depends on the image content and the algorithm.
The advantage of a single exposure for the color image has disadvantages in terms of image quality. The grid of the filter matrix can result in moiré or color shifts in finely structured originals. The color information for very small structures in the image cannot be determined correctly.
This very detailed drawing was digitally reproduced in China with the two different technologies and thus allows a direct comparison.
1.3 GPixel panorama of Munich - The panorama picture used for the video was created years ago on the initiative of Wolfgang Rouka from Munich with a scan back with trilinear scan technology. The image saved as 48-bit TIFF has a very high dynamic range. So there are many details in the shadows. Wolfgang Roucka produced a FineArt print with the dimensions 110 x 300cm, which he gave to the mayor of the time, Christian Ude
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