Interpretation of Vector Graphics and Bitmap Concepts and Analysis of Differences
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About what is vector and bitmap
The computer can display the image in a vector or bitmap format. Understanding the difference between the two can help you improve your productivity. Fireworks lets you author images in a single piece of software using vector graphics or bitmap tools, or import and process vector graphics and bitmap files generated by other applications. Fireworks provides bitmap editing mode and vector editing mode.
1, vector
Vector graphics use lines and curves to describe an image, so it's called a vector, and the graphics also contain color and position information. The leaves in the example below use a large number of points connected to form a curve to describe the outline of the leaves. Then fill a certain color inside the image according to the outline.
When you edit a vector graphic, you define the properties of the lines and curves that describe the shape of the graphic, and these properties are recorded. Operations on vector graphics, such as moving, redefining dimensions, redefining shapes, or changing the color of vector graphics, do not change the display quality of vector graphics. You can also make a certain part of the graphic hidden or change the transparency of the object by overlapping the vector objects. The vector graphics are "resolution independent", which means that when you display or output an image, the quality of the image is not affected by the resolution of the device. In the example, the image on the right is the enlarged vector graphic, and we see that the quality of the image is not affected.
2, bitmap
Bitmaps use images of small dots that we call pixels. Your computer screen is actually a grid of pixels. In the bitmap, the image of the leaves we see above will be determined by the position and color values of the pixels in each grid. The color of each point is fixed. When we look at the image at a higher resolution, each small point looks like a mosaic of color patches.
When you are doing bitmap editing, you are actually defining the information of all the pixels in the image little by little, instead of just like the vector diagram, you only need to define the contour segments and curves of the graphics. Since bitmap images of a certain size are recorded little by little at a certain resolution, the quality of these bitmap images is related to the resolution used at the time of image generation. When the image is enlarged, it will appear at the edge of the image.
The simplest difference between bitmap and vector
1, vector graphics can be infinitely magnified, and will not be distorted. And the bitmap can't.
2. The bitmap consists of pixels. The loss map consists of a missing line. This is more professional.
3. The bitmap can represent more colors. The loss map is relatively small.
4, vector graphics are more used in engineering drawings, such as ACD. More applications of bitmaps are in the drawing, such as Photoshop.