HSB value scale in Color threshold tool - Image.sc Forum
Mar 24, 2017 · I am very confused about the way ImageJ incorporates the HSB color model into the color threshold tool (Image -> Adjust). In this tool, if the HSB model is selected, it is …
How do we get the rgb values using image j? - forum.image.sc
Jan 2, 2025 · When you hover over a pixel, the “FIJI bar” displays the coordinates of the pixel, its RGB values, and the hexadecimal color code. If you want the overall RGB values for the entire …
Gray number values are not 0-255 - Image.sc Forum
Jan 17, 2019 · I’m just using ImageJ for a simple measurement, min/max and mean gray value. However, I’m confused by what these numbers actually represent. Everything I’ve looked at …
Quantify from RGB color coding - Image.sc Forum
Nov 22, 2019 · Hi All, I have images like this one and need to attribute a value to the pixels within the ROI on the scan (to compute a value for the whole ROI), based on the scale to the right …
How to calibrate gray scale image - Image.sc Forum
Oct 22, 2020 · Analyze > Set Measurements… select Mean gray value Then press Analyze > Measure You can then do a global background subtraction: Process > Math > Subtract… As …
In "Brightness & contrast", a "Range Indicator" as well as a …
May 31, 2024 · At least for this use case, I find the range indicator with min=blue and max=red super useful (either in RGB images or grayscale). Maybe adding one more toggle switch in the …
What is the difference between pixel intensity and bit?
Mar 2, 2020 · Grayscale In digital photography, computer-generated imagery, and colorimetry, a grayscale or greyscale image is one in which the value of each pixel is a single sample …
How does ImageJ calculate intensity (mean gray value?)
Jul 6, 2018 · The mean gray-value obviously depends on the image area you are measuring. Generally the area is defined by the number of contained pixels. If so, the mean gray value is …
Units for measuring average grey value? - Image.sc Forum
Mar 25, 2017 · I have measured the average grey values of JPEG images that have been converted to 16 bit greyscale, and now I am making graphs for a thesis. But I can’t figure out …
Grayscale Image Comparison Question - Image.sc Forum
Mar 22, 2017 · I would like to compare sets of images (a reference and a test image) pixel by pixel. Specifically, I would like to calculate the absolute difference in grayscale value for each …