Thanks for your contribution and we appreciate it a lot. The followinginstructions would make your pull request more healthy and more easilyget feedback. If you do not understand some items, don't worry, justmake the pull request and seek help from maintainers.## MotivationSupport depth estimation algorithm [VPD](https://github.com/wl-zhao/VPD)## Modification1. add VPD backbone2. add VPD decoder head for depth estimation3. add a new segmentor `DepthEstimator` based on `EncoderDecoder` fordepth estimation4. add an integrated metric that calculate common metrics in depthestimation5. add SiLog loss for depth estimation 6. add config for VPD ## BC-breaking (Optional)Does the modification introduce changes that break thebackward-compatibility of the downstream repos?If so, please describe how it breaks the compatibility and how thedownstream projects should modify their code to keep compatibility withthis PR.## Use cases (Optional)If this PR introduces a new feature, it is better to list some use caseshere, and update the documentation.## Checklist1. Pre-commit or other linting tools are used to fix the potential lintissues.7. The modification is covered by complete unit tests. If not, pleaseadd more unit test to ensure the correctness.8. If the modification has potential influence on downstream projects,this PR should be tested with downstream projects, like MMDet orMMDet3D.9. The documentation has been modified accordingly, like docstring orexample tutorials.

Thanks for your contribution and we appreciate it a lot. The followinginstructions would make your pull request more healthy and more easilyget feedback. If you do not understand some items, don't worry, justmake the pull request and seek help from maintainers.## MotivationSupport depth estimation algorithm [VPD](https://github.com/wl-zhao/VPD)## Modification1. add VPD backbone2. add VPD decoder head for depth estimation3. add a new segmentor `DepthEstimator` based on `EncoderDecoder` fordepth estimation4. add an integrated metric that calculate common metrics in depthestimation5. add SiLog loss for depth estimation 6. add config for VPD ## BC-breaking (Optional)Does the modification introduce changes that break thebackward-compatibility of the downstream repos?If so, please describe how it breaks the compatibility and how thedownstream projects should modify their code to keep compatibility withthis PR.## Use cases (Optional)If this PR introduces a new feature, it is better to list some use caseshere, and update the documentation.## Checklist1. Pre-commit or other linting tools are used to fix the potential lintissues.7. The modification is covered by complete unit tests. If not, pleaseadd more unit test to ensure the correctness.8. If the modification has potential influence on downstream projects,this PR should be tested with downstream projects, like MMDet orMMDet3D.9. The documentation has been modified accordingly, like docstring orexample tutorials.