OBJECTIVE This in vitro study evaluated the effect of two different shades of resin cement (RC- A1 and A3) layer on color change, translucency parameter (TP), and chroma of low (LT) and high (HT) translucent reinforced lithium disilicate ceramic laminates. MATERIAL AND METHODS One dual-cured RC (Variolink II, A1- and A3-shade, Ivoclar Vivadent) was applied to 1-mm thick ceramic discs to creat...

The computational view on image quality of Janssen and Blommaert states that the quality of an image is determined by the degree to which the image is both useful (discriminability) and natural (identifiability). This theory is tested by creating two manipulations. Firstly, multiplication of the chroma values of each pixel with a constant in the CIELab color space, i.e., chroma manipulation, is...

This extended abstract describes an entry to the MIREX’09 (Music Information Retrieval eXchange) chord detection competition. The system described here uses a combination of two algorithms previously presented by the author. The system first calculates a quantised chromagram from the audio recording. It then uses a harmonic change detection function to segment the chroma features in time. The a...

The analysis of plant root system images plays an important role in the diagnosis of plant health state, the detection of possible diseases and growth distortions. This paper describes an initial stage of automatic analysis—the segmentation method for scanned images of Ni-treated wheat roots from hydroponic culture. The main roots of a wheat fibrous system are placed separately in the scanner v...

Hue Chroma Hue Chroma Hue Chroma Fig. 1: Histogram predictions. Example of predicted hue/chroma histograms. Supplementary Section 1 provides additional training and evaluation details. This is followed by more results and examples in Supplementary Section 2. To adjust the scale of the activations of layer l by factor m, without changing any other layer's activation, the weights W and the bias b...

In order to reduce the influence of uneven illumination and reflect light for beef accurate segmentation, a beef marbling segmentation method based on homomorphic filtering was introduced. Aiming at the beef rib-eye region images in the frequency domain, homomorphic filter was used for enhancing gray, R, G and B 4 chroma images. Then the impact of high frequency /low frequency gain factors on t...

Music audio classification has most often been addressed bymodeling the statistics of broad spectral features, which, by design, exclude pitch information and reflect mainly instrumentation. We investigate using instead beat-synchronous chroma features, designed to reflect melodic and harmonic content and be invariant to instrumentation. Chroma features are less informative for classes such as ...

A 488 nm argon laser (Melles Griot) was used as the excitation source and the laser beam was focused using a 100X, 1.3 N.A., oil immersion apochromatic objective (Olympus). Throughout experiments excitation laser power was kept at 150 μW using neutral density filters. The emitted fluorescence was then collected by the same objective and an initial dichroic mirror (505DCXE, Chroma Technology) se...

Value, chroma, and hue of gingiva of 100 black and 100 white patients were measured clinically with Munsell color tabs under fluorescent light and under simulated daylight. The color of uniformly pigmented attached gingiva of both blacks and whites was described most often by a value between 5/ and 7/, a chroma of /4, and a range of hues from 2.5R to 7.5R when determined under fluorescent light...

New descriptors for lightness and chroma are presented that are based on properties of a wraparound Gaussian metameric to the given XYZ tristimulus coordinates. For the 1600 samples of the Munsell glossy set, both descriptors are found to correlate to Munsell value and chroma at least as well as the corresponding CIECAM02 descriptors when the Munsell samples are under the CIE C illuminant. Howe...