How To Break An Image Into Pixel Size Pieces?

I have a 16 bit image which , due to raw pixel values, appears mostly black when first imported into PS. I can use auto contrast to stretch the image and to make edits, however this changes every pixel value. Is there a way to edit a stretched image then revert back to the original pixel values? I need to maintain the raw pixel values, as these are data I need to use for calculations. I saw one suggestion about using an Adjustment layer then cloning pixel values, but the adjustment layer will not stretch properly to see the image. Any suggestions?

Hi everyone, I introduced myself in a former thread. Name is Katie. I'm not new to Photoshop but am new to the more murky world of saving formats for various uses, printing, etc. I am in grad school, we're between semesters, and of all things they haven't really talked about saving! This week I was freelancing and saving to .JPG and .PNG, multiple images.

Problem:
I edited 150 images of product for a retail website on photoshopCS6. Company requires three sizes: two in .jpg, one in .png. Each image was in its own layer, in a group folder; a drop shadow effect was applied to the whole folder. For ea size requirement, I changed the canvas, resized all images at once to fit within it and ran the script.

I was able to run the Script on PS to batch save the .jpgs, and they RETAINED their canvas pixel dimensions in each image (700x525; 170x170). When I ran the same script to PNG-24, it worked but it DID NOT retain the canvas size and they were all wildly different.

I did some research, and found that people had to install script fixes to do this. I installed Dr. Russell's script for Image Processor Pro that should work in PS and Bridge. I tried it, still didn't work to retain size of PNGs. Am I simply using it wrong? Is that the only way to batch save certain file formats?

Because the images were due this morning, I individually saved every png ("save as" not "web/Devices") to ensure they were all 300x350.

I need to know there's a better way to do this for all other file formats, so I don't have to painstakingly save each image.

Hi,

I would like to see pixel values of 16-bit TIFF images in Photoshop CC2014. I'm able se 8-bit (0-255) pixel values using he histogram and info tabs but it seems that when 16-bit images are opened the pixel values are still displayed from 0-255.

I want to do to see this information for scientific purposes, not for typical photo editing. I've read many discussions about the practicality of editing 16-bit images but would like to avoid having my original question overrun by that discussion here. I am specifically looking for differences between pixels with more resolution than 8 bits.

I found one recommendation t check a box stating "show pixel values in 16-bit" or something like that but I have not yet been able to find the checkbox.

Thanks for any help.

Hello,

I am completely new to this forum so I apologize if this is posted in the wrong place. I am using Adobe Photoshop Elements 9 and have a question regarding file size/quality. So, here it goes.

I am currently working on publication that requires all downloaded photos to be uploaded to a website that has a max file size of 20 mb. When I download an image to use for a background (some sort of a pattern that is normally somewhere around 800 x 800 size) the image is about 180 kb which is perfect. Unfortunately, the image has a poor ppi resolution and prints extremely blurry so in photoshop under image size, I increase the resolution so that the file size & resolution is bigger. This takes a lot of guessing on my part.

For example, if I increased the image resolution to 100000000 ppi, the file size would end up way over 20 mb which does me no good. So what I am wondering is, is if there is a way to optimize the the resolution of the image, given the file size limitations, without all of the guess and check?

If this looks confusing, I apologize and will gladly explain more. Any help would be greatly appreciated.

Hi,

Were looking for someone who has the skills to edit the image below:



Image shows a garden area with dark grey granite flagstones which are all the same size and run diagonally.

The granite is going to be changed to Indian sandstone and below are some typical images of Indian sandstone.
(If you Google image "Indian sandtone" you can see many more)

Note the Indian sandstone in made of different size pieces.




The brief is to replace the dark grey granite with the Indian sandstone with correct perspective and proportions etc so we have a genuine realistic image.

We are happy to pay a sensible amount (ideally by PayPal)

Many thanks.

Hi! I want to create some car light trails for a matte painting scene.

I'm using a "Stroke path with brush", applying Shape Dynamics so the brush size is reduced as it approaches the vanishing point of the scene (1st image).

However, when I use a Round Blunt tip (to produce a more realistic effect simulating the light trails of several cars, 2nd image), I'm not able to apply Shape Dynamics for the brush size (3rd image).

Do you know any other brush tip that could produce a realistic effect (such as in the 4th image), while also being able to reduce its size via Shape Dynamics?

Or what any other way could I achieve a similar result?

Thank you!

Hello,
I do a lot of pixel art with PSP and would like to do it with PS. Tonight I tried and the pixels won't come out clear. Is there a secret to making pixel art with PS?

Thanks,
pslane

Hi!
I have a dilemma with a high resolution picture that I want to use on a large screen. The problem is the screen has a low resolution which seem to distort the picture sometimes. Also I would like to zoom in the picture.

The monitor is a 47 inch HP LD4720tm sporting a 1,920 by 1,080 resolution. So the resoultion is like an ordinary desktop monitor but the size is more than double that. In other words, the pixel density (ppi) is much smaller.

The picture is of a clock. Size is about 670X670 pixels. I cropped out this clock from a larger 12MP Raw format Nikon picture. The cropped out clock looks something like this (my real image is copyright protected but this is very similar with 700x644px):


(http://www.stanleylondon.com/ClockShipsBellSml1.jpg )

On the screen this picture should take up a fixed size of 170X170 pixels (ie about 10% of the monitor).

The first way I did this was to simply in Photoshop Elements save the 670X670 picture as a png and with dimensions 170X170 pixels. ("Save for web" to get it as small in size as possible and chose png and 170X170). Then I put the 170X170 pic on the background canvas. It looks very nice. However, when I zoomed in the numbers and other details look very jagged or blurry.

So now I tried with the larger resolution 670X670px. I put this on the background too, and as it should only take up 170X170px, I clicked it and dragged to resize it. But this picture looks much worse than the 170X170 pic. I suppose the 170X170 pic perfectly fits the 170X170 space while the 670X670px is distorted. I mean, for the 170X170 pic there will be one pixel for each monitor point. When I do the exact same comparison on a 21 inch 1920X1080 monitor they look equally good, so it must be due to the low pixel density of the 48 inch monitor where the human eye can see each pixel.

However, now when I zoom in the details for the 670X670px were clearly visible.

I tried a few other resoultions like 360X360 and 270X270 (I resized the 670X670 pic to these sizes) and both png and jpeg. They also looked worse in normal view but of course in zoomed view they displayed more details than the 170X170 pic.

My dilemma now is how to get an image that will look good both when zoomed in and when in 100% zoom (normal view) on this large screen. Is there a way to do this. Eg like resizing to a resolution larger than 170X170 that will also look good in normal view.

Thanks.

Image shot on 5D Mk3 - using viewfinder not Live View.
Image converted to DNG.
In CC Bridge dimensions are as expected 5760 x 3840, in CC Photoshop under Image Size, dimensions are 1920 x 1280 (Original Size).

Same image in CS6 PS, dimensions given are correct i.e. 5760 x 3840

Any pointers as to what is going on and how to get the correct dimensions showing in CC PS, would be much appreciated.

Hi all,

I'm working with a marine imaging lab and have been utilizing Photoshop CC to make area measurements of sediment profile images (SPI) of the sub-seafloor.

Our camera set up utilizes a camera inside of a wedged prism that penetrates the seafloor and takes a photograph of the sedimentary matrix in-situ. The image returned is then manually separated into two layers in photoshop and measured, one layer for the portion of the image penetrating the sediment, and another for the portion of the image showing the water above the seafloor. By selecting each layer and commanding the histogram window to display a pixel count from the selected layer only we establish an area of penetration in out image. Up until today the histogram was giving me a very accurate reading. Today we updated our workflow to utilize 16 bit Adobe RGB images converted to .psd directly from camera raw in 300dpi resolution. Our previous workflow involved converting .raw to .jpeg to .psd in 8 bit, 300dpi resolution. The images look great now but the histogram returns a pixel count of about half of the previously measured values. What is going on here? I can still achieve n accurate pixel count by ctrl clicking my penetration layer and selecting a histogram read from entire image, it still drops a handful of pixels around the marquee but it is much closer to reality.

Any help would be much appreciated.

Cheers,

-Steve