Planetary body limb and plume labels for NASA images

This data set was compiled to aid in evaluating methods for automated analysis of images to detect planetary bodies and limbs. It contains manually generated labels for 308 NASA images of planets and moons. The labels annotate the location of the limb (edge) of the body and plumes emitted by the body, if any. "Plume" in this context refers to any bright material emitted from the body, such as icy plumes from Enceladus or volcanic plumes from Io. 112 of the labeled images contain plumes. Contents: This data set covers images collected by the following instruments: Cassini Imaging Science Subsystem (ISS) Galileo Solid-State Imaging (SSI) MESSENGER Mercury Dual Imaging System (MDIS) New Horizons Long Rang Reconnaissance Imager (LORRI) The target bodies include the planet Mercury; Jupiter's moons Callisto, Europa, Ganymede, and Io; and Saturn's moon Enceladus. There is a directory for each instrument_target combination: cassini_iss_enceladus/: Cassini ISS narrow-angle camera observations of Saturn's moon Enceladus galileo_ssi_callisto/: Galileo SSI observations of Jupiter's moon Callisto galileo_ssi_europa/: Galileo SSI observations of Jupiter's moon Europa galileo_ssi_ganymede/: Galileo SSI observations of Jupiter's moon Ganymede galileo_ssi_io/: Galileo SSI observations of Jupiter's moon Io messenger_mdis_mercury/: MESSENGER MDIS narrow-angle and wide-angle observations of Mercury new_horizons_lorri_io/: New Horizons LORRI observations of Jupiter's moon Io Source images: The images that are associated with each label file can be obtained from the Planetary Data System (PDS) at https://pds-imaging.jpl.nasa.gov/search . For Cassini ISS, MESSENGER MDIS, and New Horizons LORRI images, search on the product id from the label filename. For example, the product id for lor_0035092814_0x630_sci_label.yml
is lor_0035092814_0x630_sci For Galileo SSI images, the filename does not include the product id. A list of the source product ids is included in the file named galileo_image_ids.txt Label format: Labels are stored in YAML format. The limb is annotated as a series of points marked along the limb such that a least-squares circle fit of those points provides a model of the body's limb ("points" field). Plumes, when present, are indicated as one or more angular ranges (in radians) around the limb within which plume activity is present ("plumes"->"intervals" field). Angles are specified starting with 0 radians (up) and proceeding clockwise. The user who generated the labels is recorded in the "user" field. Example (galileo_ssi_io/0085r_label.yml): Six points define the limb of the body, and there are two areas of plume activity. comment: Points are in (x, y), i.e. (col, row), order.
plumes:
comment: Intervals in radians
intervals:
- [2.8540078295092326, 3.020573420947303]
- [3.219430581132992, 3.352047930386058]
user: mcameron
points:
- [123.09103311855094, 322.15933747194225]
- [143.78220150957688, 79.06162214909591]
- [89.23475042871942, 219.0261628709045]
- [256.9650789538681, 407.0275241755675]
- [176.84241267100913, 375.9514805780413]
- [113.07652569773596, 121.72097703075002]
user: mcameron Attribution: If you use this data set in your own work, please cite this DOI: 10.5281/zenodo.2556063 .

本数据集旨在辅助评估用于自动分析图像以检测行星天体及其临边（limb）的方法。数据集包含308张由美国国家航空航天局（NASA）拍摄的行星与卫星图像的人工标注标签，标注内容为天体临边的位置，以及天体喷流（plume，此处指天体喷发的任何明亮物质，例如土卫二（Enceladus）的冰质喷流、木卫一（Io）的火山喷流）的位置。其中112张标注图像包含喷流。

本数据集涵盖以下仪器采集的图像：卡西尼成像科学子系统（Cassini Imaging Science Subsystem, ISS）、伽利略固态成像仪（Galileo Solid-State Imaging, SSI）、信使号水星双成像系统（MESSENGER Mercury Dual Imaging System, MDIS）以及新视野号长距离侦察相机（New Horizons Long Range Reconnaissance Imager, LORRI）。观测目标包括行星水星；木星的卫星木卫四（Callisto）、木卫二（Europa）、木卫三（Ganymede）与木卫一（Io）；以及土星的卫星土卫二（Enceladus）。

每个仪器-观测目标组合对应一个独立目录：
- cassini_iss_enceladus/：土星卫星土卫二的卡西尼ISS窄角相机观测图像
- galileo_ssi_callisto/：木星卫星木卫四的伽利略SSI观测图像
- galileo_ssi_europa/：木星卫星木卫二的伽利略SSI观测图像
- galileo_ssi_ganymede/：木星卫星木卫三的伽利略SSI观测图像
- galileo_ssi_io/：木星卫星木卫一的伽利略SSI观测图像
- messenger_mdis_mercury/：水星的信使号MDIS窄角与广角相机观测图像
- new_horizons_lorri_io/：木星卫星木卫一的新视野号LORRI观测图像

与每个标签文件关联的源图像可从行星数据系统（Planetary Data System, PDS）获取，检索网址为https://pds-imaging.jpl.nasa.gov/search。对于卡西尼ISS、信使号MDIS以及新视野号LORRI图像，可通过标签文件名中的产品标识符进行检索。例如，标签文件"lor_0035092814_0x630_sci_label.yml"对应的产品标识符为"lor_0035092814_0x630_sci"。对于伽利略SSI图像，其文件名不含产品标识符，源产品标识符列表已包含在"galileo_image_ids.txt"文件中。

标签采用YAML格式存储。临边通过沿临边标记的一系列点进行标注，通过对这些点进行最小二乘圆拟合，即可得到天体临边的模型（对应"points"字段）。若存在喷流，则通过临边周围的一个或多个角范围（单位为弧度）标注喷流活动所在的区域，对应"plumes"→"intervals"字段。角度以0弧度（向上方向）为起点，沿顺时针方向计量。标注者信息记录在"user"字段中。

示例（以"galileo_ssi_io/0085r_label.yml"为例）：该示例使用6个点定义天体临边，且存在两处喷流活动区域。
comment: 点的坐标采用(x, y)格式，即(列, 行)顺序。
plumes:
comment: Intervals in radians
intervals:
- [2.8540078295092326, 3.020573420947303]
- [3.219430581132992, 3.352047930386058]
user: mcameron
points:
- [123.09103311855094, 322.15933747194225]
- [143.78220150957688, 79.06162214909591]
- [89.23475042871942, 219.0261628709045]
- [256.9650789538681, 407.0275241755675]
- [176.84241267100913, 375.9514805780413]
- [113.07652569773596, 121.72097703075002]
user: mcameron

若您在研究工作中使用本数据集，请引用以下DOI：10.5281/zenodo.2556063。