Location: Cotton Structure and Quality Research
2010 Annual Report
Changes needed for seed coat analysis. Methods of removing trash particles and leaving seed coat fragments on the fabric: 1) Motorized brushes which brush the loose trash particles from the surface of the fabric, leaving seed coat fragments in the fabric. 2) Air jets which blow loose trash particles from the surface of the fabric, leaving seed coat fragments in the fabric. 3) Both 1 & 2 if needed. Both methods should be tested with different configurations (i.e. angle of fabric as it is cleaned and angle of brushes/jet, brushes and jets separately and together). 4) The brush/jet configuration can be turned on and off so the fabric can be inspected with trash particles and seed coat fragments and later run removing the trash and inspecting for seed coat fragments alone. In the off position, the brushes/jets shouldn’t change the surface of the fabric, so when the system is used for white speck analysis, it can be run without any surface changes. Lighting should be adjusted or a secondary system installed to best highlight dark specks on the greige fabrics. Consistent lighting which results in an image with high contrast between dark specks and greige fabric. Software systems: Software that can analyze the images grabbed from the scanning camera using a dark-speck detection algorithm for reliable, repeatable measurements of dark specks on greige cotton fabrics (number, size and % dark coverage of seed coat fragments and trash). Automatically select the brightness, contrast and minimum pixel size removing subjectivity in the measurements and speeding up the process and report results in Excel. Soft ware options to analyze stored images (*.bmp), save the images of fabrics (*.bmp) for visual inspection. Report if the test was run with Trash removal system on or off.
The Autorate system for white specks was modified for dark specks. Greige fabrics from a selection of domestic and international cottons were evaluated by hand counting the dark specks and image analysis using the modified Autorate system. Strong correlations were found between the hand counted dark specks and the Autorate counted dark specks, showing Autorate to be a promising measure of dark specks. Test results are being analyzed to establish relationships among fiber properties, fabric defects, and Autorate values.
The methods used to monitor activities for this agreement were technical visits/e-mails/interactions, presentations at scientific and industry meetings, and publications.