Join Eric Wing for an in-depth discussion in this video Creating a region, part of AutoCAD Raster Design Essential Training.
- Instead of picking an entire image or giant areas to be edited, we have several other pick methods available. These pick methods area called enhanced regions. What an enhanced region is it understands a little better on what the objects are you're picking. What we're going to do here is basically walk through the Enhanced Region dropdown and get good at picking. So let's jump into AutoCAD. Under Get Started, let's Start Drawing. Let's insert. We'll select Architectural First Floor, and the Insert options will be Quick Insert.
Let's click Open and now on the REM panel let's click the Enhanced Region dropdown. We'll start with Smart Window. So I'm going to come down to this area here, and I'm going to pick a window right around these entities just like this. Because it's a window, only the items that are 100% inside of it will become selected. Let's do that again. Let's go Enhanced Region. This time let's go Smart Crossing. I'm going to zoom in here and I'm just going to pick a window right around this area just like that.
What happens is it extends itself all the way up and we'll select everything that's touching. These lines will be ignored and it'll select everything that we've picked. Now let's click our enhanced region again. Let's go down to Connected Entity. I'm going to come down here and find a column. I'm just going to pick anywhere along here, make sure that our raster snaps are turned on. I'm going to zoom into here and I'm going to pick this point right here. It's smart enough to know that all these items are connected so it's going to pick them.
I'll zoom out. Let's try one more. Let's go to Connected Crossing. I'm going to come into here on this column. I'm going to pick a line here, down to here, and it's going to pick them all. Of course with these methods, we can do the same as Create Region where we can just pick an entire area. It doesn't really matter. The objective is to get this to turn red, and if you remember where those settings are, let's go ahead and click this flyout right here. This is the properties. Color of REM objects, we can always change this if we want to blue, but let's keep it at red right now.
Let's go to Raster Entity Detection, Single Pick Options. Let's walk through some of these. Maximum Jump Length in Pixels, what that means is if there's a gap in a line segment and we pick it, we can tell how many pixels to ignore. I usually uncheck Stop at Raster Intersections, but sometimes it does that anyway. Use Raster Pick Gravity, what this is this is basically the aperture size, the aperture being the little box you use as a pick box. Float Tolerance, what that means is if you accidentally pick away from a pixel, AutoCAD will kind of generally assume you're trying to pick some pixels in that area.
Float tolerance of 20 pixels is pretty big. Non-Continuous Linetype Detection, that's one of these lines here. So the dash length in pixels, 300 is usually safe. Max Blank Length in Pixels, 50 is good. Let's change that to 80. Let's click OK. So now we have many selection methods under our belts. I kind of like the one where we just picked the entire raster image and everything selected.
- Inserting images
- Creating new images
- Creating image masks
- Managing images
- Editing images
- Creating REM regions and primitives
- Recognizing and vectorizing text