Update README.md

更新Tester1_feature_csv文件描述

README.md

@@ -54,22 +54,16 @@ Tester1/
 ```
 
 ## `Gaze_object_output/`
-
 This directory contains **gaze–object annotation files** for each scene.
-
 **File format**
 - `<scene_id>`: scene index (starting from 0)
 - Each row corresponds to one time step / frame
-
 ---
-
 #### Gaze Target Information
 - `Stare_obj`: ID of the object being gazed at  
   - `0` indicates background or no valid gaze target
 - `Stare_area`: coarse gaze region label on the screen
-
 The screen resolution is **5740 × 1010**, and gaze regions are defined as:
-
 | Label | Description | Region (pixels) |
 |------|-------------|-----------------|
 | `LF` | Left front view | `[0, 0] – [2870, 1010]` |
@@ -79,19 +73,54 @@ The screen resolution is **5740 × 1010**, and gaze regions are defined as:
 | `MB` | Rear-view mirror | `[2890, 210] – [3540, 400]` |
 
 ---
-
 #### Vehicle Screen Positions
 - `Car{i}_screen_X`, `Car{i}_screen_Y`: 2D screen-space coordinates of risk-relevant vehicles
 - Coordinates are aligned with the same frame as gaze annotations
 - Missing vehicles are filled with `0`
-
 **Number of risk objects per frame**
 - For the **first 10 participants**, each frame contains up to **9 risk objects**
 - For the **remaining 20 participants**, scenes **5–9** contain **8 risk objects**
 - Columns are kept consistent across files; unused slots are zero-padded
-
 ---
-
 These files jointly describe **where the driver is looking** and **where potential risk objects are located** on the screen at each time step, and are time-aligned with other modalities in the dataset.
 
 
+
+
+## `Tester1_feature_csv/`
+This directory contains **per-frame driving state and scene feature files** for each scene.
+**File format**
+- `<scene_id>`: scene index (starting from 0)
+- Each row corresponds to one time step / frame
+- Rows are time-aligned with gaze annotations and instance segmentation outputs
+---
+#### Ego Vehicle and Driver State
+- `time`: timestamp (Unix time)
+- `steering`: steering wheel angle
+- `accelerator`: accelerator pedal value
+- `brake`: brake pedal value
+- `TOR_flag`: take-over request indicator
+- `Handchange_flag`: handover / control change indicator
+- `Collision_flag`: collision indicator (binary)
+---
+#### Ego Vehicle Position
+- `main_car_id`: ID of the ego vehicle
+- `main_car_x`, `main_car_y`: ego vehicle position in world coordinates
+---
+#### Surrounding Risk Object Features
+For each risk-relevant object in the scene, features are stored using indexed columns:
+
+- Object indices: `Car1` … `Car9`
+- Typical attributes include:
+  - World-space position
+  - Screen-space position (`Car{i}_screen_X`, `Car{i}_screen_Y`)
+  - Additional kinematic or geometric features
+If a risk object is not present in a frame, its corresponding feature values are filled with `0`.
+---
+#### Gaze Point Projection
+- `ScreenPoint2D_x`, `ScreenPoint2D_y`: projected 2D gaze point on the screen, aligned with gaze annotations
+---
+These files provide **low-level driving signals, ego vehicle states, and scene-level object features**, and are intended to be used jointly with:
+- `Gaze_object_output/` (gaze–object annotations)
+- `Tester*_IS/` (instance segmentation outputs)
+