Scans of film damage

Empty scans of 35mm film frames with artifacts.

Emulsion: Lomochrome Purple
Development process: C41
Scanner: Plustek OpticFilm 7600i
Scanning software: Silverfast 9
Scanning DPI: 300
Scanned to 16-bit B&W tiff and converted to JPG using Lightroom with no compression.

We manually annotate individual artifacts in the scans with

bounding polygons, and classify each as dirt, dust, long hair, short hair or scratch. We extract each individual artifact, zero padded to square, to create a bank of isolated artifacts to sample from when generating new overlays. In total we have annotated 12135 artifacts across the 10 scanned frames. Annotations for each scan are included in JSON format, and can easily be converted to OpenCV contour format.

本数据集为带有伪影的35mm胶片空帧扫描样本。

相关参数详情如下：
感光乳剂：洛莫彩色紫色胶卷（Lomochrome Purple）
冲洗工艺：C41工艺
扫描设备：Plustek OpticFilm 7600i
扫描软件：Silverfast 9
扫描分辨率：300 DPI
扫描流程：先以16位黑白TIFF格式完成扫描，再通过Lightroom转换为无压缩的JPG格式。

我们手动对扫描件中的单一个伪影进行标注：采用边界多边形框选目标，并将伪影划分为污垢、尘埃、长发、短发与划痕五大类别。随后将提取出的每个伪影进行零填充处理以转换为正方形尺寸，以此构建孤立伪影样本库，用于后续生成叠加层时的采样。本次共计在10帧扫描样本中标注了12135个伪影。各扫描样本的标注文件均以JSON格式存储，可便捷转换为OpenCV轮廓格式。