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Comparison of user features of messaging platforms refers to a comparison of all the various user features of various electronic instant messaging platforms. This includes a wide variety of resources; it includes standalone apps, platforms within websites, computer software, and various internal functions available on specific devices, such as iMessage for iPhones.
For some features: secret chats, [116] voice and video calls, [117] and voice chats in groups [117] No No No Tencent QQ: No [118] [119] No No No No Threema: No A valid phone number or email address is not required for registration & login. However, the mobile app serves as the primary device, due to the end-to-end encryption architecture. [120 ...
The iOS 7 betas limited FaceTime Audio to calls placed on a Wi-Fi network (the same original limitation of the video version of FaceTime), but the final release has removed that restriction to allow it to work over 3G and LTE data connections, as is the case with most carriers and plans about FaceTime with video.
The main idea of measuring subjective video quality is similar to the mean opinion score (MOS) evaluation for audio. To evaluate the subjective video quality of a video processing system, the following steps are typically taken: Choose original, unimpaired video sequences for testing; Choose settings of the system that should be evaluated
Perceptual Evaluation of Video Quality (PEVQ) is an end-to-end (E2E) measurement algorithm to score the picture quality of a video presentation by means of a 5-point mean opinion score (MOS). It is, therefore, a video quality model. PEVQ was benchmarked by the Video Quality Experts Group (VQEG
Mean opinion score (MOS) is a measure used in the domain of Quality of Experience and telecommunications engineering, representing overall quality of a stimulus or system.. It is the arithmetic mean over all individual "values on a predefined scale that a subject assigns to his opinion of the performance of a system quality".
Webcam/Video Batch file sharing Media synchronization Serverless [b] Binary format Protocol; 3GPP standards: Friedhelm Hillebrand: 1985 Proprietary: Phone number (e.g. +15550123) Yes No No About 250 contacts in SIM, unlimited from phone. No serial messages Medium No Yes 3G-324M/ViLTE: RCS: No ? ? 3GPP standards; Bitmessage: Jonathan Warren 2012 ...
The metric is based on initial work from the group of Professor C.-C. Jay Kuo at the University of Southern California. [1] [2] [3] Here, the applicability of fusion of different video quality metrics using support vector machines (SVM) has been investigated, leading to a "FVQA (Fusion-based Video Quality Assessment) Index" that has been shown to outperform existing image quality metrics on a ...