Title :
Live demonstration: Real-time high dynamic range video acquisition using in-pixel adaptive content-aware tone mapping compression
Author :
Vargas-Sierra, Sonia ; Linan-Cembrano, Gustavo ; Rodriguez-Vazquez, Angel
Author_Institution :
Inst. de Microelectron. de Sevilla, Univ. de Sevilla, Sevilla, Spain
Abstract :
This demonstration targets the acquisition of realtime video sequences involving High Dynamic Range (HDR) scenes. Adaptation to different illumination conditions while preserving contrast is achieved by using a sensor chip, which implements an adaptive content-aware tone mapping compression algorithm by using in-pixel circuitry. Its response gets adapted to changing illumination conditions by using at each frame a statistical estimation of the light distribution, which is derived from the HDR histogram calculated at the previous frame. This method allows adaptive HDR video, while capable to capture very large DR scenes including moving objects.
Keywords :
data compression; image resolution; image sensors; image sequences; microprocessor chips; statistical analysis; video coding; HDR histogram; illumination conditions; in-pixel adaptive content-aware tone mapping compression; in-pixel circuitry; light distribution; real-time high dynamic range video sequence acquisition; sensor chip; statistical estimation; Dynamic range; Field programmable gate arrays; Graphical user interfaces; Heuristic algorithms; Histograms; Image coding; Lighting; Track selection — 11.1 Imagers and Vision Processing;
Conference_Titel :
Circuits and Systems (ISCAS), 2015 IEEE International Symposium on
Conference_Location :
Lisbon
DOI :
10.1109/ISCAS.2015.7169033