Photoshop orthos

Uploaded by rdomunkynet on 14.02.2011

>> For this tutorial, I just want to go over a couple points that relate to how
to get your orthographic sketches that you've done on paper into SolidWorks.
And, we're actually gonna use Photoshop to, as our tool here.
So what I've done is I've, I've made a sketch on paper and I've scanned it into Photoshop.
I went ahead and scanned this in at 300 dpi,
but normally unless it's a super detailed sketch,
a normal screen resolution of 72 dpi is sufficient.
You notice that I scanned it in a little crooked.
The construction lines here are supposed to be perfectly horizontal.
And this is easy to fix in Photoshop.
Just go over to usually where the eye dropper tool is here, and click down on it.
You can select the measure tool.
Then you just find one of your construction lines, either horizontal or vertical,
and you just measure to that angle that the, that the construction line is drawn at.
So this looks about right.
Can see up here it says that it's a 2.4 degree angle,
meaning it's 2.4 degrees off from the horizontal.
So now what I can do is go up to image, rotate canvas, arbitrary,
and this angle amount will be pre-entered into the, into the dialog here.
So I can just hit okay, and Photoshop will straighten out the image.
That works with vertical lines too.
It'll, Photoshop just knows whether or not you were trying to hit a horizontal
or vertical, and it'll compensate automatically.
So once we've straightened our scan, you might just want to open up the levels tool
to make sure you have enough contrast.
This actually looks fine, but you know, I might, I might want a little more contrast
to the image, or I might need to bring out the midtones a little bit.
Usually that's not necessary for simple sketches.
And then I'm gonna use the crop tool to start isolating specific orthographic views.
So I'll start with the top view here, take my crop tool and zoom in a bit.
And I usually don't go all the way to the edges of the object,
but you can get in pretty close.
With symmetrical drawings it can be helpful to make the cropped area symmetrical
across the axis, that just can make things easier to place in solid works later.
So that looks pretty good.
I'll go ahead and crop, and now I'm just gonna save a copy
of this, and I will call this top.
Jpg is fine, sometimes it can be good to use png,
but jpg can provide the most compression.
It really doesn't make a difference though, because once it's brought into SolidWorks,
it's gonna be saved in SolidWorks' internal bitmap format.
So I'll just say save here, replace, compression doesn't really matter.
This is just a, a general guide that we're gonna be drawing by.
Okay, now I'm gonna go back and crop out my side view.
That looks about right.
I'll crop that and save the side view.
That's all there is to it.
So in the next tutorial we'll actually bring these front and side, top, top,
and side views into SolidWorks.