Study of signature and seals of Chinese painters, calligraphers and collectors in Japanese collections

我们对日本收藏的中国书画作品进行了研究，这对本项目很重要。首先，我们用6X4.5大小的相机拍摄了所有作品的黑白白色全景。接下来，我们拍摄了艺术家和收藏家在作品上的签名和印章的实际大小的黑白白色照片。为了更容易识别油墨颜色，必要时还拍摄了6X4.5彩色照片和35mm彩色幻灯片。这些照片中每个印章的实际尺寸打印在卡片上，并由艺术家和收藏家分类。还考虑了每个签名和印章的真实性和日期。

We carried out a research on Chinese paintings and calligraphic works of Japanese collection which are important for the present project. First, we photographed in black and white general view of all the works with 6X4.5 size camera. Next, We took actual size black and white photographs of the signature and seal marks of the artists and collectors on the works. For easier identification of ink colors, 6X4.5 color photographs and 35mm color slides were also taken when necessary. An actual size print of each seal mark in these photographs are pasted on cards and classified by the artists and collectors. Authenticity and dates of each signature and seal marks were also considered.