Uneven grain | Article about uneven grain by The Free Dictionary
Wood grain in which the growth rings show an obvious difference between spring-wood and summerwood; found in ring-porous hardwoods (such as oak) and softwoods (such as yellow pine) that have soft, uniform springwood and hard, dense summerwood.
References in periodicals archive
The fabric and interfacing shifts back and forth while moving on the ironing surface and the fabric likely ends up fused with an uneven grain
The methods are - Spatial for high frequency or fine noise, Threshold for light grain, Temporal for heavy or large grain and noise patterns, and Despeckle for uneven grain