diff --git a/README.md b/README.md
index c1ab020..b51597c 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,81 @@
-# underimage-fusion-enhancement
-Reference：
 
-《color balance and fusion for underwater image enhancement》
+# Underimage Fusion Enhancement
+
+A small MATLAB-based project for enhancing and fusing underexposed / low-quality images using multi-scale fusion and simple color/contrast corrections. The repository contains MATLAB scripts and functions for weight computation, pyramid decomposition/reconstruction, saliency and color compensation, and objective image quality metrics.
+
+## Highlights
+
+- Multi-scale image fusion using Gaussian/Laplacian pyramids.
+- Color compensation (red/blue), gamma correction, and simple color balance helpers.
+- Perceptual and objective quality metrics (UIQM, UCIQE, UICM, UISM) for evaluation.
+- Utilities for saliency detection, sharpening, and contrast enhancement.
+
+## Requirements
+
+- MATLAB (tested with R2018a+). Core functionality uses basic MATLAB functions.
+- Image Processing Toolbox recommended for convenient image IO and visualization, but not strictly required for all scripts.
+
+## Quick start
+
+1. Open MATLAB and set the project folder on the path, or change directory to the project root.
+
+In MATLAB:
+
+```matlab
+cd('d:/mini/underimage-fusion-enhancement')
+addpath(genpath(pwd))
+main
+```
+
+ 
+
+`main.m` is the entry script used to run the default fusion pipeline. Input images should be placed in the `image/` folder; outputs are written to `result/`.
+
+## File overview
+
+Key files and their purpose:
+
+- `main.m` — Example driver script for running the fusion/enhancement pipeline.
+- `laplacian_pyramid.m`, `gaussian_pyramid.m`, `pyramid_reconstruct.m` — Pyramid decomposition / reconstruction utilities.
+- `norm_weight.m`, `lapweight.m`, `Saturation_weight.m` — Weight map computations used during fusion.
+- `saliency_detection.m` — Saliency map computation used as one of the fusion weights.
+- `sharp.m` — Image sharpening helper.
+- `simple_color_balance.m`, `gammaCorrection.m`, `blueCompensate.m`, `redCompensate.m` — Color and exposure correction utilities.
+- `rgb_to_lab.m`, `lab_to_rgb.m`, `rgb2lab_n.m` — Color space conversions.
+- `hisStretching.m` — Histogram-based stretching.
+- `UCIQE.m`, `UICM.m`, `UIConM.m`, `UIQM.m`, `UISM.m` — Image quality metrics and supporting files.
+- `image/` — Example input images (place your images here).
+- `result/` — Output folder where processed / fused images are written.
+
+There are several other small helper scripts; filenames are descriptive — see the repository root for the full list.
+
+## Usage notes and ideas
+
+- To process a custom image, add it to the `image/` folder and edit `main.m` to select it or adapt the script to iterate through the folder.
+- The pipeline is modular: you can replace or tune weight maps (for example, tweak saliency, saturation, or laplacian weights) and then re-run pyramid fusion.
+- For reproducible experiments, log parameters and output filenames in `main.m` or add a wrapper that accepts parameters.
+
+## Evaluation
+
+The repository includes implementations of common underwater image quality metrics (UIQM, UCIQE, UICM, UISM). Use them to compare variants of the pipeline. Example usage is found in the metric files; typically they accept an RGB image and return a scalar score.
+
+## Limitations
+
+- This project is a research/educational codebase implemented in MATLAB. It is not optimized for production or large batch processing.
+- GPU acceleration is not implemented — speed depends on MATLAB and your CPU.
+
+## Contributing
+
+If you'd like to contribute, please:
+
+1. Fork the repository.
+2. Add tests or examples if you change behavior.
+3. Open a pull request with a clear description of the change.
+
+## License
+
+No license file is included in this repository. If you want to open-source the project, consider adding an `LICENSE` (for example MIT) so others know how they may use the code.
+
+## Contact
+
+If you have questions or need help running the code, open an issue or contact the repository owner.
diff --git a/main.m b/main.m
index 1ed87c5..de063cb 100644
--- a/main.m
+++ b/main.m
@@ -12,12 +12,10 @@
 imshow(im1);
 xlabel('red channel compensate');
 
-% blue channel recover
-% In murky waters or high water levels or the presence of plankton in abundance that causes the blue channel to attenuate strongly,Supplement the blue channel
-% im1 = blueCompensate(im1);
-% subplot(2,3,3)
-% imshow(im1);
-% xlabel('blue channel compensate')
+% blue channel recover In murky waters or high water levels or the presence
+% of plankton in abundance that causes the blue channel to attenuate
+% strongly,Supplement the blue channel im1 = blueCompensate(im1);
+% subplot(2,3,3) imshow(im1); xlabel('blue channel compensate')
 
 % white balance enhancement
 im2 = simple_color_balance(im1);