A lot of effort goes into prioritizing development at scanR. The market opportunities and the technical challenges span many areas and thus it takes great discipline to remain focused. One area that has remained a lower priority is color document scanning. scanR is committed to providing the highest quality services and we don't want to release an enhancement that doesn't meet your expectations. In the case of color documents, your expectations are set already by the expensive color copier you have plugged into the wall. To meet those expectations, there are several important technology challenges that must be overcome.
scanR Documents currently removes all color information. The result looks like a black and white copy. Here is a color document processed by scanR Documents:
However, we could just add back the color information. In fact, some competitive technologies do this. Here is a sample of a color document processed by a competitive technology using this simple method:
As you can see, there is some color, but the result is not satisfactory. The most noticeable problem is that the photos look bad. Other problems include poor color matching and primitive lighting adjustment. And this example is easy because the original image is high-quality, in-focus and relatively evenly lit.
To properly process color documents from camera images, the service must deal robustly with segmentation and color correction. Segmentation is the process of identifying regions of text, graphics, background and photos. Once these regions are correctly detected, each region must be separately processed according to the characteristics of its type. Color correction may be different for each region and must be able to adjust to the correct colors in the presence of off-white lighting, shadows, sensor noise and compression. Here is the result from the scanR labs:
As you can see, there really is no comparison. Color documents require sophisticated technologies to give the results that you want. We don't think adding few specks of color really improves the quality of your document scans and so we'll wait until we have it right.