作者: Koji Kobayakawa , Masaaki Hibino , Yasunari Yoshida , Masashi Ueda , Kiyotaka Ohara
DOI:
关键词:
摘要: A test image 40 for determining a gamma value has plurality of first gradation patterns 20 and second 30. The 30 are arranged alternately in vertical direction. In each pattern 20, relative brightness linearly increases from left to right. 30, decreases