Chroma representations of musical excerpts are nowadays very popular and used for a wide variety of applications. Within these, transposition to a common key or tonality can represent an important aspect, usually having a dramatic impact to final system’s accuracy. We present and evaluate a new and straightforward way for transposing two chroma representations to a common key that outperforms p...

In this paper, we attempt to address the inadequacies of query-based image retrieval, and argue the importance of structured browsing and navigation methods. We propose to build a hierarchical classification model, which is the basic structure for image browsing and navigation. Currently a prototype system has been implemented, called CHROMA. CHROMA provides both a visual tool to browse or navi...

Shortly after their first releases to the public, text-to-image artificial intelligence models like Stable Diffusion and Midjourney also became focal points in debates around ethics of usage. Anton Troynikov is a cofounder Chroma, startup working improve AI interpretability. With art generators, others at Chroma saw an opportunity build tool that would try attribute source images used particula...

We propose a novel model for music structural segmentation aiming at combining harmonic and timbral information. We use two-level clustering with splitting initialization and random turbulence to produce segment labels using chroma and MFCC separately as feature. We construct a score matrix to combine segment labels from both aspects. Finally Nonnegative Matrix Factorization and Maximum Likelih...

The most common approaches to the automatic recognition of musical key are template-based, i.e., an extracted pitch chroma vector is compared to a template key profile in order to identify the most similar key. General as well as domainspecific templates have been used in the past, but to the authors best knowledge there has been no study that evaluated genre-specific key profiles extracted fro...

We believe that the Gordian knot may be cut by discarding the traditional definition of white, and assuming that red and green, when mixed alone, tend to cancel each other's chroma without the intervention of any blue process whatever. This leaves but little chroma for the blue to cancel when mixed with yellow. Consequently, no intrinsic blue process need be assumed to accompany yellow, and the...

In this paper, we propose a new region extraction method using chroma key with a two-tone checker pattern background. The method solves the problem in conventional chroma key techniques that foreground objects become transparent if they have the same color with the background. The method utilizes the adjacency condition between two-tone regions of the background and the geometrical information ...

We propose a lighting system which adjusts lighting colors. The lighting system adjusting colors is a system that provides required illuminance and lighting color at an appropriate location. This system consists of many intelligent lighting with RGB fluorescent lamps, many chroma sensors and an electric power meter. These equipments are connected to a network. The chroma sensor can measure the ...

Experiments were performed to test a set of general-purpose gamut-mapping functions. These gamut-mapping algorithms utilized contrast-preserving scaling functions. These algorithms were tested against the GCUSP gamut-mapping algorithm proposed by Morovic and Luo, which was shown to have very good "universal" gamut-mapping characteristics. The results of these experiments showed that vast improv...