User Guide

User Guide Neat Image

20-Nov-03

5.2.1. Digital camera profiling

Use the calibration target page to prepare a test image for building a device noise profile for your

camera using the following steps:

1. Set the camera to a specific shooting mode (ISO level, exposure, etc.) that you want to build a

profile for.

2. Important: set the focusing system on infinity (you need to get an out of focus image).

3. Make sure the calibration target fills the whole frame and make a shot.

4. Bring the resulting image to Neat Image and build a device noise profile using this test image:

a. Use the central area to do rough analysis;

b. Use the Auto Fine-Tuning Analyzer.

5.2.2. Flatbed scanner profiling

Use the calibration target page to prepare a test image for building a device noise profile for your flatbed

scanner using the following steps:

1. Set the scanner to a specific scanning mode (resolution, light level, etc.) that you want to build

a profile for.

2. If possible set the scanner out of focus (an out of focus scan is preferred for profiling).

3. Scan the calibration target

4. Bring the scanned image to Neat Image and build a device noise profile using this test image:

a. Use the central area to do rough analysis;

b. Use multiple smaller patches to fine-tune the rough profile or just use the Auto

Fine-Tuning Analyzer.

5.2.3. Film scanner profiling

Use the calibration target page to prepare a test image for building a device noise profile for your film

scanner using the following steps:

1. Set the camera to a specific shooting mode (ISO level, exposure, film type, etc.) that you want

to build a profile for.

2. Important: set the focusing system on infinity (you need to get an out of focus image).

3. Make sure the calibration target fills the whole frame and make a shot.

4. Develop the slide and put it into the scanner

5. Set the scanner to a specific scanning mode (resolution, light level, etc.) that you want to build

a profile for and scan the slide.

6. Bring the scanned image to Neat Image and build a device noise profile using this test image:

a. Use the central area to do rough analysis;

b. Use multiple smaller patches to fine-tune the rough profile or just use the Auto

Fine-Tuning Analyzer.

5.3. Profiling methods

In the subsection Building a device noise profile for specific device mode, page 16, building profiles

using the input image is explained. In some cases, the input image does not contain enough featureless

areas for building a profile. In such cases, other images can be used. Generally, there are several such

profiling options that can be arranged from the most desirable to the least desirable (from the standpoint

of profiling accuracy):

1. Use a 100x100+ uniform featureless area in the input image for rough analysis; then fine-tune the

profile using several other featureless areas in the same image;

2. Do (1) with another image (for example an image of the calibration target) from the same

camera/scanner shot/scanned in similar conditions; then additionally fine-tune the profile using