Often times we receive photographs from customers to convert to vector art. They come to us in a wide range of subject matter. Some are pictures of logos on garments, some are pieces of equipment, types of transportation, buildings, landscapes, products, animals and even people. Some will turn out terrific and some will have issues. The reason some images will be exceptional and some will be passable all comes down to how vector art works.
Here are the basics
Photos, or as the industry calls them raster images, like jpgs, pngs, tifs, and bmps, are all created at a specific print size with a specific resolution, often referred to as DPI – dots per inch. These raster images are made up of points of light, or pixels, that have assigned varying brightness. These little varying shaded pixels, are what makes raster images smooth and photo realistic.
If you try and increase the size of your image, the raster information stays the same, it is just stretched over a larger space. This is why you get that bothersome fuzziness effect known as pixelation(Img 2).
Image DPI is not something that can be increased from a photo, the only options for obtaining a higher quality photograph are to either retake the shot or contact the original photographer for a better copy.
Vector images on the other hand are not made of pixels. Think of vector images as math you can see. This is what gives a true vector image the power to be scaled as large or as small as you could want to make it without losing clarity or getting that “stair step” effect. These images are created out of shapes(img 4) with assigned colors. That makes them super for logo work, or man made objects. Things that are actually made with shapes. This is what makes vehicles and equipment stellar items to convert(img 5).
Here are a few more examples of vector working out for objects with well defined shapes
What makes a vector file great for objects, is the same thing that limits it when trying to capture life. A vector file can never maintain the same curve of a baby’s smile, or the fur of a dog. The same shading that is needed to make a face recognizable with its subtle shading and lighted effects can never be duplicated properly in a vector image. When it comes to live subject matter think of how would the photo look in a paint by numbers book. It is a very similar concept to how vectors work; shapes assigned a color.
In vectors it is true that we can assign gradient filled areas to try and simulate shape and form better but it will never be as detailed at the original photo.
In conclusion, the recommended subject matter in photographs that can be converted to vector, will always have well defined lines and colors: cars, boats, equipment, tools, buildings. Anything organic, like people, pets, trees, birds, fish, will always have a limitation as to how close to the original they can be recreated.
For the best end result please provide the clearest photo or scan possible so we can redraw as much detail as possible.