Monday, January 23, 2012

Importance Of Resolution

Importance Of Resolution When You Convert To Vector

In order to work on a raster image using any CAD program, it is important to first convert raster to vector. Only after you convert raster to vector image, you will be able to make any changes and alter the raster drawing. However, not all raster images can be converted into perfect vector images because of resolution related issues. The resolution is the term used to refer to the total number of pixels present per inch in the raster image. The “dots per inch”, commonly known as dpi, refers to the resolution of the image. For example, if the image has 400 pixels per inch, the resolution is said to be 400 dpi. When you convert raster to vector, the resolution of the raster image plays a very important role since the definition of the shape in the scanned image is dependent on it. The higher the resolution of the raster image, more defined the shape is when you convert to vector. In a high resolution image, the pixel size is smaller since the number of pixels per inch is more. This translates into smoother curves when scanned. If the raster image is of a lower resolution, the shape gets distorted when you convert raster to vector. In order to convert to vector, you have to first increase the resolution of the raster image.

Is it possible to increase the resolution after vectorization?
You have to choose the right resolution before you convert raster to vector. Once the scan is complete, it is not possible to increase the resolution. Increasing the resolution of the scanned vector image will only lead to the type of results generated by Photoshop. The only solution in such situations is to start the process all over again using higher resolution for smoother lines and curves.

Perfect resolution to convert raster to vector
The “right” resolution is very subjective in nature and is dependent on raster image that you would like to convert to vector. If the raster image has a lot of intricate details that need to be replicated to perfection in the vector image, you have to ensure the resolution is high. Most people prefer a resolution in the range of 200dpi to 500 dpi to convert technical raster images to vector. However, if you want to convert logos and other intricate artwork to vector images, you have to ensure a resolution in the range of 700dpi to 1250dpi and more. If you want to make sure you have the right resolution after you convert to vector, zoom in on the vector image to see if the lines and curves are well defined. If the curves and lines are as close to the raster image as possible and are comfortable for you to work on, you have chosen the right resolution.

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Tuesday, January 3, 2012

An Advance CAD Drafting Technology

The world of drafting changed forever during the 90's when CAD software program became much more exposed on the general population. Before CAD became the drafting industries standard practice Drafters would draw each line by hand on the use of the drafting board, and several hand held tools. This technique was much more time consuming, and for isometric drawings (3D) it could take in days or weeks to try and do hard renderings. More than the last ten years, several software program firms have produced advancements to CAD software program producing the task of drafting much more user friendly on the computer.

If you’re not familiar with CAD or CADD it is the acronym for Computer Aided Drafting. Sometimes it’s named Computer Aided Drafting Design also. Two-dimensional and Three-dimensional drawings are created once the draftsmen enter data into a CAD software program. Lines are drawn on a X, Y, and Z axis to make Three dimensional models. Once designing 2D drawings only the X, and Y axis are used which represent the left, right, up, and down directions. The Z axis is used to make 3D models and represents the depth.

I can remember like a baby my Father teaching me to draw lines, and to write my A, B, C's on a drafting board he created for my room. These boards have a sliding ruler which allowed you to produce lines inside a straight fashion, and they had been covered using a slick material. This allowed rulers, and other tools to slide simply along its surface with out catching to it. The career was much more daunting, and you had to become very careful as soon as drawing lines because even with an eraser mistakes could possibly be observed easily. I enjoyed drafting like this like a kid, but because I've been exposed to CAD I would by no means go back.

It seems like each year advancements in personal computer technology go farther and quicker than the year just before it. When I very first started utilizing CAD software package all of the lines had being put in manually with commands on the keyboard. They would tell the software package to build the lines commencing point, length, and what angle to direction it. This method seemed to consume forever compared to the way lines are made nowadays. From the CAD software package available today it is possible to perform all varieties of commands in a 3D environment. For instance, in case you wanted to add a radius to a corner that has already been created, all you should do is click the command in your fillet. It'll then ask you in your dimension on the radius, and right after you enter the dimension it's going to create a perfectly smooth and rounded corner.

CAD drafting technology becomes a lot more advanced every year with the introduction of updated software. For now, and I believe for a lengthy time to come, AutoCAD drafting software will remain the drafting industries frequent process for making architecture, mechanical, civil, electrical, plumbing, and any other sort design work. The days of using hand tools, and drafting boards is over. These means will never disappear, but for now will remain a lot more of the hobby to most draftsmen.