Photoshop :: How To Better Use Levels To Perfectly Match (greyscale) Images
Sep 16, 2012
I am working with 16bit (Tiff) greyscale Heightmaps, images that displace geometry to create terrains.When I want to adjust the images I do it in one of several applications that return the Heightmaps with an altogether different range of levels (value of blacks and whites). However I have no way of matching the levels of the updated image to the original except to eyeball it using Levels. This is time consuming and hard to get right.
I tried changing the images to RGB and color matching them, which is kind of what I want to do, but it leaves me with stepping (similar to an 8bit image) because the range it is trying to match is so subtle I think. how to better use Levels to perfectly match (greyscale) images?
I'm currently using the pen tool to trace out a Nike trainer to improve my basic skills and understanding of the tool. Â The problem I'm having is that I want each section of the shoe to be its own shape so that I can edit the colours individually. However when drawing each section in some places I have to draw over the outlines of already created shapes and trying to match/overlap the paths as close as possible is a nightmare. I want to have a stroke enabled on all shapes to better define them but I get areas where the overlaping sections look uneven giving the shapes very unsmooth curves where overlapping occurs. Â So I am just wondering if there is a way to enable the pen tool to snap to certain sections of existing paths so I have a perfect overlap when required?
I am having a problem creating smooth 3D images.I have been taking a 16-bit greyscale image with a various domes and other shapes with systematic gradations of greyness 'impressed' onto it. From this, I use the "create 3D mesh from greyscale" to create a surface whose depth is based on the values in the 16-bit greyscale image: this greyscale image becomes the "Background Depth" layer in the 3D image. I then add a Background layer (that exactly matches the greyscale image) to the 3D image, which will determine how the 3D shape will be coloured.  I then force ray tracing using the "Quality: " "Ray Trace Draft" or "Ray Trace Final" and the result is a 3D surface with some shadows. Okay so far, BUT the surface is a bit pitted, a bit ragged, not smooth, the shadows have jagged bit in - it's just not very good, in fact, it's unusably poor. Even if I apply some filtering to the greyscale image to smooth out any nasty discontinuities there may be in it, the final 3D surface is still pitted, with jagged shadows etc.  If I look at a wireframe version of a 3D image, it is clear that the resolution of the starting image is better than that of the wireframe image: there are several points in the original image to each point on the wireframe image (that is to say, each vertex in the triangles that make up the wire frame image is several points away from each other vertex).  When I look at the sample images in tutorials etc they look incredibly smooth and appealing. Why cannot I produce the same quality of image? Are there some settings in the Edit->Preferences->3D panel that I need to reset? Some way of increasing the number of triangles in the wireframe model?  I have posted a sample of the grayscale image, and a sample of the 3D image that this greyscale image produces when converted into a mesh. (I've saved them as JPG files, which forces the 16-bit greyscale into 8-bit mode. But the original conversion to a mesh was performed using a 16-bit greyscale image).
I am using windows 7 on an HP Pavilion Laptop, using OpenGL to draw the graphics.
I am making a list of thumbs in Photoshop that I want to all be the same width and height. What is the fastest and best way to accomplish this when the images are all slightly different sizes?
I've already chosen one of the images that has the perfect dimensions for the page. I'm confused though about how to crop the other images to match those dimensions. I am using CS2.
why i can't not match properties (MP) multileader texts, as you can see on the pic, i want the Mleader text on the right to be the same size as on the left, they are in the same layer, same mleader style but when click MP to match with the one on the left, nothing happen?
i'm trying to align text perfectly into a rectangle (vertically). I know about the text box, but it either ads hyphens or there is a mialigned spacing on the right side.  I want it to be perfectly aligned on the left and right. I've attached an example from a site i found online, but its somewhat a poor execution, the word spacing varies through out the paragraph.  Is it possible to do this without varrying the spacing between words?
I’m trying to cut my pictures with a mask to make a selection but it looks kinda bad and takes too much time. The pen tool is hard to use if anyone has any suggestions on how to cut pictures,
Is there an option that will let me fit an image that I imported to fit the canvas that I'm already working in? I want to make it a background to a feathered cutout that I will blend into it.
If I drag-and-drop one layer on top of another, how can I make sure they are perfectly aligned? Do I need to use the "shift" key while dragging and dropping?
I currently use Mep 2012 although my question I believe is general in nature. As a sheet metal contractor I do drawings that have many different entities at various elevations. Many times I use change propeties to match the propeties of on entity like a linetype to change another. What I really need to do is have the ability to use a similiar button and match or change the "Z" elevation of a specific entity just like I do for linetype, color etc.
I've taken a photo of a display frame, and I need to align it perfectly horizontal in order to not crop off parts of the frame when editing out the background. I know how to move images back and forth with the crop tool, but it's not very precise, and I definitely don't want the frame in the image partly chopped off because I can't get it angled just right.
I am converting a photoshop doc to greyscale and saving it as an eps. when I place that eps into illustrator and try to print separation the eps is coming out in 4 color instead of just black. if I save that same file as a tiff and place it in illustrator it prints in just black. if someone else in my office opens the eps in photoshop and saves it again then it will print in only black. is there a setting somewhere in photoshop that i am missing that will fix this and allow me to save the greyscale eps correctly.
I have several greyscale masks that I've downloaded. The only way I know to get the greyscale mask into a photoshop document is a method I found on about.com:
1. Open mask, select all, copy
2. Activate Photoshop document, Q for quick mask mode, paste from step 1, Q to exit quick mask mode, then click the layer mask mode icon in the layers palette.
This works fine, but is there ANY other way to get a save greyscale mask into a Photoshop document?
I convert a color jpg to Greyscale in Photoshop CS2 and it looks great on the monitor. Yet when I print it I get a lot of green tinting. I am using Windows XP service pack 2 and an Epson Photo Stylus 260 printer.
Every time I convert an image/psd/tif to greyscale inside photoshop or in ACR my levels sliders and curves are inverted such that whites are on the left and blacks are on the right and everything is upside down (raising the curve on the black side lowers the blacks, lowering curve on white side raises the whites etc). This never happened to me before but happens every time now, I'm not sure what button I've hit to make photoshop do this.
So... what I want to do is give every player a yellow-red shirt. What I did with the palyer on the right: I just re-brushed the red and yellow on a new layer above the shirt and set the layer-style on "color" and the opacity around 80%. So far so good...
Then I wanted to do the same for the other players... But I just can't get it right. Ofcourse the problem is that the greyscale-values behind the color-layer are different every time.
I have got a picture of beautiful woman. And? How to make a part of picture in greyscale? For exemple - arm. I selected this part and clicked on greyscale. And? The whole picture is in greyscale. Wh? I tried make a quickmask but the greyscale mode is not active.
Newbie question but couldn't seem to find the answer using the search fxn.
With the pic below, I want to have a greyscale background but have a colourful blue colour for the bunch of grapes. I am able to create the greyscale background by using:
Image > Mode > Greyscale
but I don't know how to add realistic colour to the grapes. The colour I add seem to look cartoon-like.
I had edited an image in a layer. It is a full color image. When I dragged & droped it into a totally different photo, suddenly it appeared in greyscale. The original image in its original layer is still full color. This has never happened to me before.Â
I have an exactly symmetrical geometric bitmap photoshop image (exactly symmetrical down to the pixel)Â which I need to convert into vector. When I import the image into illustrator and use the trace tool it does not trace both sides of the image exactly symmetrical.. Â Notice the trace line does not symmetrically match the bitmap.I have tried all the trace types such as 'high fidelity photo' yet it still does not trace exactly on both sides of the symmetrical image. Â Is there any way to get the trace perfectly symmetrical?
I like to print 12 x 18 on 13 x 19 but a3 13 x 19 allows only 12.95 width. If I select my custom template 13 x 19 with .5 border it tells me i must use front loading, occasionally it has let me but most of the time i must print 11.95 x 18 making photos a little off center?
I am unable to perfectly center because print driver on canon pixma pro mk2 gives only a3 13 x 19 with a border, yet it takes 13 x 19 with driver setting.
All other controls work fine until i use the grey scale tool. All other options/controls become inactive including close and minimize. I have to use ctrl+alt+delete to exit.
The main reason I use grey scale is to be able to use the arbitrary rotation tool. Is there away to use arbitrary without using grey scale?
