Photoshop: increase limit on recorded measurements in Analysis

  • 5
  • Idea
  • Updated 5 years ago
  • Implemented
  • (Edited)
Considering the level of resolution in today's digital photography, good image analysis must be able to encompass a large number of "artifacts" within one image. Photoshop has the capability to collect data on a maximum of 700 "artifacts" (or selections) within one image. I routinely have images with 2000 - 3000 selections for analysis. Therefore, each image must be split into many smaller pieces, then each piece analyzed, and finally recompile the data to get overall statistics on the original image. Since the limitation here seems to be one of memory only, why can't Adobe open up the Analysis portion of Photoshop to accomodate more selections within a photo? If my assumption on memory is incorrect, I would welcime enlightenment.
Photo of Jimmy Eason

Jimmy Eason

  • 7 Posts
  • 0 Reply Likes

Posted 7 years ago

  • 5
Photo of Chris Cox

Chris Cox

  • 20280 Posts
  • 836 Reply Likes
How are you tracking artifacts?
Where exactly are you seeing this limitation?
Photo of Jimmy Eason

Jimmy Eason

  • 7 Posts
  • 0 Reply Likes
As an example, suppose an image has a background of one or two gradient colors. In addition, there may be many many "spots" of two or more shades of another color. The subject is prepared so that each color represents a particular substance or material. Statistics are required to determine area percentages and perimeters of each color (selection). Most of the time, a few thousand of these objects are present in each image. This necessitates parsing the image into several small pieces to collect the required information. Photoshop only allows you to get data on 700 items per image. I would like to see this increased.
Photo of Chris Cox

Chris Cox

  • 20280 Posts
  • 836 Reply Likes
You didn't answer my questions.
Photo of Jimmy Eason

Jimmy Eason

  • 7 Posts
  • 0 Reply Likes
I track artifacts by various selection techniques.

The limitation is the maximum number (700) of features under Image->Analysis->Record Measurements.
Photo of Chris Cox

Chris Cox

  • 20280 Posts
  • 836 Reply Likes
OK, now we're getting somewhere.

You want to increase the limit on recorded measurements.
Photo of Jimmy Eason

Jimmy Eason

  • 7 Posts
  • 0 Reply Likes
Bingo! Photoshop tools are very powerful for quantitative evaluation of images. Professionals in the sciences could be well served by significantly increasing this limit.
Photo of Zomby Orc

Zomby Orc

  • 2 Posts
  • 0 Reply Likes
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, while keeping the individual measurements in the log panel. However, this process always stops when it reaches 700 images!!! It'd be really helpful if I could record more.
Photo of Chris Cox

Chris Cox

  • 20280 Posts
  • 836 Reply Likes
The UI can get slow with an excessive number of measurements (just trying to manage the list), and the size of the data in memory can get kind of ugly -- so there does need to be some upper limit.

What would be a realistic upper limit for the number of measurements?
5000?
10000?
more?

And what are you doing that needs that many measurements? We need real reasons to spend time testing such an increase.
Photo of Jimmy Eason

Jimmy Eason

  • 7 Posts
  • 0 Reply Likes
@Chris - 5000+ recorded measurements would be a significant improvement, and it seems a memory requirement/performance balance should be possible at some level.

My need for a larger measurement capability concerns analysis of microstructures of metals and other materials. A typical micrograph contains thousands of features that may fall into several classes, each possessing a set of physical or electromagnetic characteristics that directly influence the real world behavior and performance of the material. Statistical data of these features are very important to the investigator. Microbiology presents similar needs to the researcher.

Photoshop's measurement tool coupled with its powerful selection techniques can make a valuable contribution to microscopic evaluations, particularly if the number of measurements could be increased.
Photo of Chris Cox

Chris Cox

  • 20280 Posts
  • 836 Reply Likes
Do you ever do automatic counting on those sorts of images? (probably in another software package)
And if so, how many features/measurements are produced per image?

(I imagine that crystal regions from a thin section or acid etched metal could easily go over 1000 per photo, but I'm not sure how high the counts go in current practice - and my experience in that area is pre-digital photos)
Photo of Jimmy Eason

Jimmy Eason

  • 7 Posts
  • 0 Reply Likes
In most cases the number of features observed is in the thousands. The exact value varies, but I have never seen a situation where the number was less than 2,000 and it is usually in the range of 7,000.
Photo of Chris Cox

Chris Cox

  • 20280 Posts
  • 836 Reply Likes
So for your case, I really need a limit of at least 10k.

Thanks for the input!
Photo of Zomby Orc

Zomby Orc

  • 2 Posts
  • 0 Reply Likes
In my case, a 10k limit would also be extremely helpful. Thanks.
Photo of Jimmy Eason

Jimmy Eason

  • 7 Posts
  • 0 Reply Likes
Yes a 10K limit would serve nicely. It would probably reduce the work time per job by 70%.
Photo of Chris Cox

Chris Cox

  • 20280 Posts
  • 836 Reply Likes
Thanks again!
Photo of Chris Cox

Chris Cox

  • 20280 Posts
  • 836 Reply Likes
Official Response
The limit was increased to 10000 in Photoshop 14.2.