Information Technology Reference
In-Depth Information
Chapter 8
Mathematical Modeling for High Frame-Rate
Video Signal
Yukihiro Bandoh, Seishi Takamura, Hirohisa Jozawa, and Yoshiyuki Yashima
Abstract. Higher video frame-rates are being considered to achieve more realis-
tic representations. Recent developments in CMOS image sensors have made high
frame-rate video signals, over 1000 [Hz], feasible. Efficient coding methods are re-
quired for such high frame-rate video signals because of the sheer volume of data
generated by such frame rates. Even though it is necessary to understand the statis-
tical properties of these video signals for designing efficient coding methods, these
properties have never been clarified, up to now. This chapter establishes, for high
frame-rate video, two mathematical models that describe the relationship between
frame-rate and bit-rate. The first model corresponds to temporal sub-sampling by
frame skip. The second one corresponds to temporal down-sampling by mean fil-
tering, which triggers the integral phenomenon that occurs when the frame-rate is
downsampled.
1
Introduction
Highly realistic representations using extremely high quality images are becoming
increasingly popular. Realistic representations demand the following four elements:
Search WWH ::




Custom Search