Processing The Image - Kodak DirectView CR 825 Theory Manual

THEORY GUIDE
10DEC05

Processing the Image

TG4825-1
Page
1 When the software on the INTERNAL PC detects that a raw image was received from
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the MCPU BOARD A2, the software:
• places the data in a prepared raw image file
• checks the CASSETTE ID
• locates the patient record that matches the CASSETTE ID
2 The software on the INTERNAL PC:
• reads the body part projection information to determine the necessary processing
• connects to the Image Processing Library (IPL) to locate a given image processing
algorithm for the body part on the image - PTone algorithm
• using the PTone algorithm, makes a subsample-by-9 image and applies the PTone
Lookup Table (LUT) to the image. The PTone LUT provides pixel values for
corresponding shades of gray on the image.
• using the PTone algorithm, makes a subsample-by-4 image and applies the PTone
LUT to the image.
• applies image processing algorithms in the IPL to the subsample-by-4 image to
improve the image, for example:
• makes a thumbnail image from the subsample-by-4 image, about 70 x 70 pixels. This
is the image that displays on the EXAM SCREEN. All the thumbnail images in the
database are available to be displayed on the EXAM SCREEN at any time.
Note
The full 6.5 - 10 MB raw image is stored on the database of the CR 825/850 SYSTEM, but
no software in the CR 825/850 SYSTEM allows viewing of the full raw image. The
subsample-by-4 image in.JPG format can be viewed, and the processing parameters can be
removed to view the subsample-by-4 raw image again. If necessary, the FE can download the
full raw image using special software.
– Edge Enhancement (EE) - makes edges in the image sharper
– Black Surround Mask (BSM) - makes the area on the outside of the image black
Imaging Sequence