Grayscale thinning is a fundamental image processing/computer vision operation, but unfortunately a rather slow process. This paper examines the theoretical foundations of grayscale thinning as an extension of binary mathematical morphology, and presents a parallel processing approach that speeds up processing time by almost two orders of magnitude on parallel hardware.

Thls paper describes a metric for predicting thc perceptual similarity bctween a lob7-resolution grayscale character and the higher-resolution binary bitmap that was used to generate the grayscale character. The metric is used to quantify perceptual tradeoffs between the number of graylevels in a character bitmap and the resolution of the sampling grid.

BACKGROUND Recently, a grayscale inversion view was reported to improve intra- and inter-observer reliabilities in measuring coronal curvature with Cobb and pedicle methods in scoliosis patients. However, the grayscale transformation has never been applied to the measurements of spinopelvic parameters. The purpose of this study was to compare the measurement reliabilities of the spinoplevic sag...

PURPOSE To evaluate needle visibility in ultrasound under contrast mode conditions. MATERIALS AND METHODS Needle visibility was evaluated for bevel, EchoTip ® and shaft of 18G Chiba biopsy needle with a 9 MHz linear probe (GE Logiq E9). Insertion angles varied between 30°(steep) and 90°(parallel to the probe surface). The acoustic output varied from 5-28%. 2 different contrast mode presets wi...

Grayscale images are generally made from blackand-white or color continuous-tone photographs. Original photographs are digitized using one of a number of scanning techniques—ranging from desktop scanners to Kodak PhotoCD equipment— and saved as computer files. Saved digital files can then be opened directly by page layout programs, such as Adobe PageMaker or QuarkXPress, placed in the desired p...

In this study a continuous wave Ytterbium-doped Yttrium Aluminum Garnet (Yb: YAG) disk laser has been used for welding of AlMg3 casted alloy. A high-speed imaging camera employed to record hot vapor plume features during the process. The purpose was identify mechanism pores detection in real-time based on correlations between metallographic analyses and area/intensity various locations samples....

In the process of acute resistance exercise, repeated variation in motion intensity can lead to muscle fatigue and heart failure. Therefore, acquiring interval time training pattern effect be improved by variation. order achieve this goal, an Inception-V3 model is proposed for estimation. The MIVIE(Motion Intensity Variation Interval Estimation) dataset consisting Strong, Moderate, Weak groups ...