Photoshop :: Image Adjustments At The Center Of A Circle
Sep 10, 2005
I just got a new Lightscribe drive and I have been having a field day making custom labels for old data discs. Now I have decided I want to make some backups of some of my games so I can put the original discs/boxes into storage finally.
The problem with this is that Lightscribe discs have a larger "unprintable" radius at the center of the disc that other media. I found that when I scanned some of my discs and imported them directly into the LS Print program I was losing alot of information/text/pictures.
Essentially I need to take a point in the center of the circle and 'stretch' it outward in a circular pattern. (If you have seen Ace Venctura 2, think about when he had to escape from his mechanical rhino-spy vehicle through its bum I have also attached an image so you can see exactly what I mean. The read circle in the middle is approximately where the most inner edge of a LS disc can begin to print.
where to even begin as far as keywords go. I do realize that there will be a certain degree of 'smushage' (technical term) on my final product, but I would rather keep the original disc look than having to make my own custom disc for each game.
I'm a photoshop noob but am learning fast. I'm having a bit of trouble doing something that I imagine to most of you is quite straight forward.
Basically, I have a square image (3000px x 3000px) and I want to cut out an exact circle from the centre of the picture. So I choose the Ellipitcal marquee tool and place my cursor approximately in centre of the picture, hold down SHIFT and ALT and drag to the desired circle size. Next I press V to bring up the alignment toolbar hoping that I could centre the selection to the exact middle of the picture but I can't. PS won't allow me to select any of the alignment buttons.
After this I want to take the CUT image and paste as a new image so that I have a just the circle and it's contents and no rectangular background. I'm sure PASTE will do this but I can't get this far.
In Photoshop / Illustrator, when I create a polygon, and rotate it around it's center point it wobbles. When I scribe it inside of a perfect circle, and rotate it around the circle's center point it rotates smoothly. Basically proving that (at least according to these Adobe products) that the center point of a circle is different than the center point of a polygon scribed inside of it.
An image – the dots in the center are the corresponding center points according to Adobe:
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This is incorrect according to basic math. Is Adobe aware of this bug?
how to dimension from one circle center to another ("A" in the picture)? Or the angle between two circles ("B" in the picture)? My main problem is that i cant snap to a circle center with any dimension type except for diameter and radius, and then i can only dimension one circle on its own.
I'd like to put a circle dead center around an object. How would I do this?
Also (related), I'd like to at times use Corel Draw more like a CAD program and specify the radius when I round corners on a rectangle or give dimensions when I create a new shape (line, rectangle, circle etc). Is this possible?
And in CAD, many times I'll use the divide and break feature to align centers some objects created along a straight line. Is this possible in Corel Draw?
I'm laying out cribbage board designs for export to .dxf. I've drawn the board holes as circles but for the dxf file what I really need is a Single Point at the center of each circle.
So, is it possible to make single points in CorelDraw X4? If so, is there a way I can put a single point in the center of 300 holes at once?
I've never tried this in AutoCAD before. I would like to create a simple rectangular area with a circle in its center. When this area is hatched, the circle is hollowed out. Furthermore, I'd like to have this to insert into a block for stretch action manipulation. Is this possible with AutoCAD 2010?
I'm new to Illustrator and perhaps it's not the best software of CS6 Master for doing this, but:
I have a few (13) circles, they are connected with lines (one line from the centre of a circle to the centre of the next one, so 13 connecting lines). I need to move the circles around in order to create the appearance that suits me best, but I want the connecting ending to move together (see picture below). I need to do this often and get an immediate visual feedback. How do I do it? Am I using the wrong software altogether?
I have a project consisting of scans of an early version of a book, all the files I have are bmp's. Most need adjustments like shadows/highlights etc. I make the adjustment, image looks fine until I click OK to apply, then photo reverts back to original state. I've tried saving as tif, jpg, pdf and nothing works.
After opening the file, I change the mode from bitmap to grayscale for making adjustments. I usually need to get more contrast, ie make the paler lines darker and more visible. So, Image->Brightness/Contrast or Levels. I get small window to work with and I have preview option checked. I can see the result on the image, when I make the adjustments. Fine so far.
But then, when I press OK, it will go back to the original situation with no changes made.
I'm trying to create a pretty simple "starfield" by using noise and then playing with the Levels. When I go to adjust the levels, everything looks good in the preview. However, when I click "ok" the image reverts back to what it looked like before, with maybe a VERY slight change, but nowhere close to what my preview had shown originally. I'm not sure what could be causing this, but it does the same thing whether I try levels, brightness/contrast, and threshhold.
I'm using CS4 photoshop on my iMac 2008. When I try to apply image adjustments like 'posterize' or 'Brightness/Contrast' or 'Levels' to my image, I can adjust the settings in each dialog box, and I see the changes on my image because the 'Preview' box is checked. But when I click 'OK', the image reverts to its original and no changes are applied to the image.
I started out by importing a .jpg into photoshop. I've tried working on this .jpg, and I've also converted to Photoshop file format .psd, and still the same problem occurs. The original image had colour, but I converted it to grayscale. I also tried not converting to grayscale, and still the same problem. I am trying to make the image high contrast, with only black and white (no grey).
The same problem also occurs when I apply my adjustments on adjustment layers. Here I am able to modify each adjustment layer. The image changes and looks the way I want. But when I go to save the image, no matter what format I save as (.jpg, .psd, or .tif) the resulting image has none of the adjustments. It's still the original.
We have a bunch of shots taken using natural light - the shots all have completely different exposure and white balance adjustments.
Now that the shots feel like they've been shot at the same time of day (and on the same day) we'd like to start adjusting the white balance accross multiple shots - but use the current white balance/exposure from each individual shot as the starting point - not reset the adjustments.
Kind of like baking the current settings or making adjustments on top of current adjustments - or make new adjustments relative to the current adjustments.
I have 3 separate external HDs I use, all with the same images backed-up for safe keeping. I’ve made adjustments in Lightroom 5 to approx 200 images scattered throughout the 7000 images on 1 external HD. Is there any way I can copy and paste these changes so they are consistent on the same images on the other 2 HDs? All images are displayed in Lightroom 5.
I notice that when i import RAW images into Lightroom and open them up, they immediately become dull, less vibrant and very different o the in-camera image. I have tried to find whether there is asetting which applied automatic adjustements to the image but have been unsuccessful. This doesn't seem to happen when i use the Canon RAW processing software.
Have noticed a strange behavior lately with LR 5 when I am making small adjustments in the Basic panel. The problem seems to happen when I am moving through the images too fast. If I make some adjustments to an image and then hit the arrow key to go to the next image, all of the previous adjustments are copied over. I typically use the Previous button for a lot of my editing but LR does this on it's own. I then need to Reset the photo to default and start over. Not a huge annoyance until it gets to the point where you need to re-edit some photos and it copies over everything. This happened several times to me today. I had an event fully edited but decided there were a few photos that needed minor adjustments. As I was quickly scrolling through making adjustments where needed, I would notice that LR would drastically change the settings to match the previous photo. This completely slowed me down and I had to re-edit so many photos. In some cases it would even copy over the cropping I had done. I hate to say but I am not very impressed with this version of LR so far. Feels rushed and not polished. I understand that each version has it quirks and issues but so many for an established program. Tempted to go back to 4. Slow and unusable healing brush and now this annoyance are two major hits for me.
I need to find a way how to insert a point or a * on the center point of a hole and put it on a different layer. The reason for this is - I am a CAD tech for a welding shop and we cut parts out of steel and we use the dxf file format for our plasma table to cut parts. For example : if i have a 1 inch thick plate and want to put a 3/4'' hole in the plate the hole will be distorted because the hole is smaller than the material thickness. For these situation we can use the plasma table to burn a point or a dot on the center point of the hole. But to do this the point or dot must be on a different layer in the dxf.
