A vector circle and bitmap circle appear to be the same when seen on a white background. Vector objects can be placed over other objects, and the object below will show through. These tools also create soft blends, transparency, and shading that once was difficult to achieve in vector drawing programs.Īnother advantage of vector images is that they’re not restricted to a rectangular shape like bitmaps. Today’s vector tools apply bitmapped textures to objects, giving them a photo-realistic appearance. Vector graphics are continually becoming more advanced. Restricted to a square or rectangle shape. This is slowly changing because many modern browsers are able to render SVG images.Ĭaptures greater detail due to high pixel counts. The most common and accepted format for vector images on the web is Scalable Vector Graphics (SVG).ĭue to the nature of vector images, they’re best converted to GIF or PNG format for use on the web. The most common reason to convert a vector to a bitmap would be for use on the web. Once it has been converted to a bitmap, the image loses all the qualities it had in its vector state. It’s important to save a copy of the original vector artwork in its original format before converting it to a bitmap. When you convert a vector image to a bitmap, you can specify the output resolution of the final bitmap for whatever size you need. You can increase and decrease the size of vector images to any degree, and the lines will remain crisp and sharp, both on-screen and in print. You can see an example of the data behind a vector image in this explanation of an SVG file.īecause they’re scalable, vector-based images are resolution-independent. An object can be modified by changing its attributes and by shaping and transforming it using nodes and control handles.įonts are one type of vector object. You can freely change any number of object attributes without destroying the basic object. Changing the attributes of a vector object does not affect the object itself. Vector objects are defined by mathematical equations, called Bezier Curves, rather than pixels. This happens because it has the same number of pixels but in a smaller area. When you do this, you increase the PPI of the image so that it prints clearer. Scaling a bitmap image to a smaller size doesn’t have any effect. Even if you don’t see it on your screen, it will be apparent in the printed image. However, if you scale a bitmap image to a larger size in your page layout software, you’ll see a definite jagged appearance. In other words, it doesn’t change the number of pixels in the image. Scaling an image does not affect the image permanently. Interpolation determines which color those added pixels will be the computer adds what it thinks are the correct colors. If a red pixel and a blue pixel are beside each other and you double the resolution, two pixels will be added between them.
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When creating pixels, the software has to estimate the color values of the new pixels based on the surrounding pixels. When you increase the size of a bitmap image, the software creates new pixels. When you reduce the size of a bitmap image through your software’s resample or resize option, pixels must be discarded. Easier to go from vector to bitmap than the other way.īecause bitmaps are resolution-dependent, it’s impossible to increase or decrease their size without sacrificing image quality.