What is a bitmap?

What is a bitmap? must be engaged in graphic design personnel have a certain understanding of the bitmap and vector map, but for just learning Ps and CDR friends, first of all will learn how to distinguish an image is a bitmap or vector map, so here and you introduce the concept of bitmap and vector diagram, bitmap and vector map of the difference in where? Well, here's the official entry point to explain the bitmap and vector map.

1, bitmap: Also called raster image, but also can be called point bitmap. It is composed of many color blocks (pixels) of the image, magnified after the screen will become blurred, will see a square color block. And this one of the box is a pixel, as the image of the way large, its pixel is magnified, the image will be less clear. However, if viewed from a slightly farther position, the color and shape of the bitmap image appear to be contiguous.

2, Vector map: Also called vector graphics, is composed of lines and color blocks of images. The sharpness can still be clear after amplification. General vector Map can only rely on the software generation, vector graphics generated files occupy less space, suitable for graphic design, text design and some logo design, layout design. The general advertising company to do logo is the vector map.

Bitmap and Vector differences:

1, the quality of the bitmap is based on the resolution of the size to determine the larger the resolution, the image of the picture quality is clearer. and the vector map is separated from the resolution. There is no resolution on the vector graph.

2, the most fundamental difference is that the bitmap amplification will become more and more unclear, that is, will appear a point, like Mosaic, is the picture has been distorted effect. But the vector graph its infinite amplification does not appear the image distortion effect, only its magnification coefficient parameter is changed.

3, vector graphics editing is very convenient, it is the editor of the appropriate for an object, that is, an entity, the editing of each object will not affect other unrelated objects. The editing of the dot bitmap is limited. The point bitmap is the order of dots (pixels), where local movement or change affects the arrangement of pixels in other parts.

Summing up the above points, in fact, I am in the resolution of bitmap and vector graphics, only need to enlarge the picture can be divided clearly. Common bitmap formats are JPG, JPEG, BMP, GIF, PSD, TIFF and so on. Of course the vector format words General CDR and AI reside in the majority.