I'm trying to use the Image Analysis functionality of PS CS6 to obtain brightness levels from an image.
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To test the "Gray Value" measurment, I've created 11 patches from 0%-100% in 10% increments. I used the fill tool (Shift-F5) and specified values using H=0, S=0, B=<percentage_value (0-100)>.
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The respective RGB components of the generated patches are exactly as expected (255*percentage_value).
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The measurements obtained through "Record Measurement", however, do not agree, with the exception of the 0% and 100% extremes, which are reported with 0 and 255, respectively.
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Inbetween, there is disagreement which rises from 0 @ 0% to the highest (5 @ 50%) to then decrease again to 0 @ 100%.
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Here is the series by which the reported Gray Values are too low (from 0% - 100%): 0, 3, 3, 4 4, 5, 3, 3, 2, 1, 0.
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How come?
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I've tried removing colour profiles (to exclude gamma encoding issues) and using different colour spaces and/or models, with no change in behaviour.
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All my patches are pure gray so there shouldn't be any problem with unexpected colour weighting.
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One funny observation I've made is that even though the patches are a 100% homogenous, PS reports different miminum and maximum values. For instance for the 50% brightness patch (RGB triples of 128, 128, 128), the report is MinVal=123, MaxVal=124, MeanVal=123.934809.
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Clearly, the value for all three aspects should be the same, and I expect the value to be 128.
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I'm using PS CS6, Version: 13.0.1 (13.0.1 20120808.r.519 2012/08/08:21:00:00) x32, on Win 7.
There is a noticeable difference between color values specified in Pantone books/Color Manager and CS6. For instance, the correct RGB value for Pantone 158 CP should be 228/126/26, whereas Photoshop's RGB value for the same color is 245/127/41. Â I have a subscription to Creative Cloud and all applications are up to date. When will this be fixed?
I have an image here, a product on grey seamless, and the rgb values across the seamless vary. In the top left the rgb values are around 200 - 208, in the bottom right the values are around 160 - 180. I need to make the values of the background close to consistent all around, however without just painting in a solid grey. There needs to remain some texture of the actual seamless. The result should be like the second image. Is there a way to achieve this fairly quickly and easily?
I'm using Inventor 2013. I created an assembly where I did a lot of top down modeling (meaning components in the assembly were created in the assembly. All but a handful of the components are adaptive to other components). When I went to make my drawings for having the components made, I started noticing that some of the dimension values were wrong. I could go into the model and verify the features, but when dimensioning on the drawing it would not match. Furthermore, this didn't occur on every dimmension on the drawing. Not even half of them were incorrect, but it only takes one to really mess up a part.
I've attached a screen shot of what I'm seeing. The 15.2 and 5 dimmension are correct, but obviously those don't add up to 31.37. I know I can manually override this dimmension, but only if I know to do it. I tried to do a drawing of another part in the same assembly and eventually found a similar problem.Â
Finally, I created a step file of the 1st part (to strip away the adaptivity) and when I created the drawing again, the problem went away.
My question is, is there something I did in the assembly / creation process that would have caused this?Â
I was undertaking a cut and fill analysis but the values were very different. Evaluating spot levels the depth was given as 1.2m but the volume surface stated it was only .6m.
After a while I noticed that the master surface had been "corrupted" duing a recovery, all definitions to the controlling corridor and other objects had been removed and a snapshot added with the description "added during recovery".
I had to remove the surface and start from scratch re-building the definitions.
Civil3D 2013 / 2014 Windows 7 Professional 64-bit Intel(R) Core(TM) i7-3820 CPU @ 3.60GHz (8 CPUs), ~4.0GHz With 32768MB RAM, AMD FirePro V4900, Dedicated Memory: 984 MB, Shared Memory: 814 MB
Example: CTRL+click on grey channel theoreticly (by my theory) make selection from white depending on its value. So cuting out must leave transparent greyscale image. But it don't (okey, it do, but changes black value):
The same selection inverted and filled with 100%K gives correct result: Is my "theory" about CTRL+click selection wrong? Becouse for my point of view, both ways should give same result.
How do I change the default toolbar background from dark gray to light gray in illustrator CS6? In the older versions, the toolbar backgrounds were light gray. It easier to read on light gray backgrounds. THe same question applies to Photoshop CS6. InDesign CS6 has light gray backgrounds.
My company is switching from ctb files to stb files. With the ctb file, we make concrete hatch with two layers. A top layer with the concrete hatch pattern and a background layer with a solid hatch patern. The ctb file concrete plots the concete hatch black and the solid background hatch light gray. I am using civil 3d 2013 and the hatch allows a seperate background color mask. I am trying to make all my concrete layers (Top of Curb, Curb Flowline, etc.) a certain color scheme, i.e. shades of green. I would like my on screen concrete hatch patern to be a green color with a gray background, but plot the concrete hatch black with a gray background. I can not figure out how to do this without making two layers. Is there a way to use one layer and utilize the background color mask to show on screen green and gray, but plot black and gray?
Why does a black through white gradient created in an RGB document have a B channel that differs from the R and G channels? Â In 8-bit mode, only some of the "grays" have a mismatching B value and there seems to be more of them when the gradient is created by Gradient Tool than when it is a Gradient Fill layer. The difference seems to be 1 in the cases that I've seen. Â In 16-bit mode, I see the B differ from R and G by 7 at black, gradually reducing to 0 at white. Â Before someone says, "Why make a fuss about small discrepancies?", I'm asking why there is any difference at all.
I'm trying to show, using the eyedropper tool, the actual values of pixels in an 8-bit grayscale image (Mode command confirms that's what's there). In the Info panel, the eyedropper tool displays percentages for every type of color information (K, CMYK), while the "8-bit" field remains blank.
I have an attribute blocks and this att block has two tag values , is there a simple code for to change 1st tag values automaticly according to 2nd values ?
for example :
1st tag (50x50) - 2nd tag ( 100 )Â Â Â ==> 50x50-100
if i enter 201 valuse to 2nd tag then 1 st tag has to change as 100x100
if i enter 501 valuse to 2nd tag then 1 st tag has to change as 150x510
Is there a way to have no layer value set for the description keys. I set all the layers, and now I realize I'd rather set this to no layers (boxes are all unchecked). I'd rather see no value under the layer column, but there doesn't seem like a way to set this.Â
Can AUTOCAD sum values that are entered as text values? Attached is a table text whose right final values should be all sumed up? Is this possible inside AUTOCAD?
In both Photoshop and Illustrator the gray colors look brown. However, in Fireworks and other programs the gray colors look gray. Any color management settings to fix this?
In some of the Photoshop "Extended" versions, there was a function in which one could apply a known measurment to an image and then determine other dimensions in the image. For example, if one were designing a sign for a building and shot a picture of the building with a known 5' doorway, one could use the measure tool (or whatever it was called in that function) to tell Photoshop that the doorway was 5'-0" wide.
From there, after you laid in the sign design, and used the measure tool on the sign image, Photoshop would tell you the dimensions of the sign based on the scale you set with the doorway. Now for the big question: One, does that function still exist, and two, if so, where do you find it?
I'm recording measurements (gray value) in a selection, using the "record measurement" in the measurement log panel. I need to repeat this over thousands of images. I've written an action that opens the images one by one (batch process), records the measurement and closes them.
However, after exactly 700 measurements, Photoshop stops and says that it cannot record this measurement. I've tried this with CS4 and CS5 (extended) as well, and I get the same result. why Photoshop measurement log has this "700 entry" limit?
I’m designing a DVD case cover. I’m printing it with my home printer, when I’m measuring it on the paper it larger than it specified in Photoshop. I have tried to check and uncheck the “Scale to Fit Image� but its still not accurate. My image is : 297x210 Res : 300ppi Why the measurement on the paper and the document size in Photoshop are not the same? something to do with the printer driver? Any help?
I am taking measurements of a large site plan for a report.  However, after I save and exit the image, it clears the measurement log.  In other words, after saving and exiting, and then reopening the image, the measurement log is clear. I can save the measurement log as a text file, but when I reopen the image, the data isn't there and I cannot find a way to link it back to the image. Is there a way to save the data with the image?  I am using CS4 Extended on Windows 8.
I'm trying to set the scale of my picture in CS6 but everytime I got to analysis -- set measurement scale I can't select it! I need it to make scale bars on my fluorescent pics so I can finish my thesis. I have CS6 (64x) from creative suite 6 design standard that I got from my school. The picture is .tiff file 24 bit
way to quantitatively measure the level of light intensity in different conditions. I know there are light intensity gauges that measure lumens and fc's but I was wondering if there is a way to measure the brightness of an image using photoshop?
So far I have noticed that there is a way to change basically everything about an image but I haven't found anything that gives me information about the picture itself besides its size and resolution.
Does anybody know how to measure light intensity or brightness of an image?
in Photoshop Extended (CS6), when I set a custom measurement scale and save/close the file, the scale information is not retained after the file is reopenend. I have experimented with both .psd and .tif files. I used to be able to do this in CS3 without any trouble!
when I'm using the rectangle tool or the marquee selection I get this awesome little 'context' box that shows how big the object I'm drawing is.. but it's on inches. How do I change this to pixels?
I was under the impression that the rulers across the top and bottom of the canvas were measuring the length and width of the window at the given resolution.
However, this can't be the case, because I notice that when I crop a photo down from a width of 70 to a width of 20 on the ruler, when the crop finishes, the width of the canvas is back to looking like 70, so the ruler is not absolute, but some kind of relative measure? And is there a way to get an absolute ruler either of any unit?
 In CS6 how do you disable or turn off the "measurement/info" fly out box, for example I am using the line tool to clean up a graphic, however at the point of my curser, the info panel is in the way and I cant see what I am tyring to erase.
When I crop them I have set the crop tool to 4x3 thinking that's the aspect ratio of my screens at least. IN crop tool am I specifying an aspect ratio or the units my image is in in PS CS [pixel or inches or cm- Inches in my case]?
Also, it just occured to me, what happons to the image if the user has set thier resolution to something other than 4x3 ratio, e.g. 800x720 ?
I’m designing a DVD case cover. I’m printing it with my home printer, when I’m measuring it on the paper it larger than it specified in Photoshop. I have tried to check and uncheck the “Scale to Fit Image” but its still not accurate.
My image is : 297x210
Res : 300ppi
Why the measurement on the paper and the document size in Photoshop are not the same?
I can not get the ruler to display - and yes I know how to turn it on and to change the unit of measurement. Also the options for setting the diameter of the clone stamp is no where to be found. BTW, I'm using the expert mode and even tried the other modes, still no dice. There does seem to be some change in the margin border when I attempt to display the ruler (just gets slightly wider, but no ruler). Perhaps there is a a button some where to make all the adjustments visible like I am used to seeing in previous versions.
