How do we get the rgb values using image j? - forum.image.sc
Jan 3, 2025 · It depends on what you plan to measure. If you want the RGB values for a specific pixel, you can use the pointer. When you hover over a pixel, the “FIJI bar” displays the …
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 …
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 …
Thickness color scale bar - Image Analysis - Image.sc Forum
Jun 27, 2020 · I know the color scale can be seen in the histogram of thickness images. Can this scale bar be added in ImageJ? Or need to use other software to do this？But how to …
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 …
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 …
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 …
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 …
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 …
Temperature data from pixel intensity - Image.sc Forum
Nov 19, 2021 · Hello! I have a set of thermal images that I would like to measure temperature from the pixel intensity of a manually selected ROI in ImageJ. Each image has a scale bar with …