Abstract
Saliency is the quality of an object that makes it stands out from neighbouring items and grabs viewer attention. Regarding image processing, it refers to the pixel or group of pixels that stand out in an image or a video clip and capture the attention of the viewer. Our eye movements are usually guided by saliency while inspecting a scene. Rapid detection of emotive stimuli an ability possessed by humans. Visual objects in a scene are also emotionally salient. As different images and clips can elicit different emotional responses in a viewer such as happiness or sadness, there is a need to measure these emotions along with visual saliency. This study was conducted to determine whether the existing available visual saliency models can also measure emotional saliency. A classical Graph-Based Visual Saliency (GBVS) model is used in the study. Results show that there is low saliency or salient features in sad movies with at least a significant difference of 0.05 between happy and sad videos as well as a large mean difference of 76.57 and 57.0, hence making these videos less emotionally salient. However, overall visual content does not capture emotional salience. The applied Graph-Based Visual Saliency model notably identified happy emotions but could not analyze sad emotions.
Highlights
By nature, every organism, including humans, can detect each and every stimulus rapidly, including emotions, danger, etc
Results done for the Graph-Based Visual Saliency (GBVS) Map image for each of the video frames
As reported in the literature, fixation duration is affected by two major factors: the viewer’s cognitive abilities to process the scene, and the amount of the time required by the oculomotor system so that it can signal the eye movement [23]
Summary
Every organism, including humans, can detect each and every stimulus rapidly, including emotions, danger, etc. Perceiving emotions is a natural and environmental ability for humans. Emotions are usually categorized as happy, sad, or neutral, depending on how humans feel and the information they perceive from their surroundings through observation [1]. Surrounding salience ( called saliency) depends upon the characteristics that make it stand out from its neighbours. Saliency is the visual prominence of the scene. It typically arises from the contrast between an item and its surroundings
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