週報(野崎)

foveated renderingの論文を読んでいました。

現在の中⼼窩レンダリング技術のほとんどは、同じ離⼼率値において、視⼒が縦軸よりも横軸の⽅が⾼いことを⽰しています。研究ではさらに、下⽅視野の⽅が視⼒が優れていることが⽰されています。レンダリング中にこの⾮対称性を考慮せず、⽔平⽅向と垂直⽅向にわたって均⼀な視⼒を想定し、円形で行っています。

そこで、上記を解決する楕円形か楕円形に近いひし形を使って中心窩レンダリングにしてみたらよいのではないかと考えています。

中心窩レンダリングの種類は双曲線型、線形型、非線形型、対数極型、矩形型があるのを知りました。

週報(西元)

 Real_ESRGANというモデルで超解像してみたところ、顔が変わって、顔認識はできますが、顔認証できるレベルではありませんでした。SwinIRというモデルでも超解像してみたところ、Real_ESRGASNよりも本物に近く超解像できていました。画像によっては、顔認証できるまでの画像になっていました。出欠管理システムとして使うものとして想定しているので、登録する顔に特化した学習モデルを作成して、類似度がどれくらい向上するのかを試してみようと思います。

元の画像

Real_ESRGAN 顔認識 可能、顔認証 不可

週報(SUN YUYA)

This week I start conducting experiments about long term tracking. Except for the experiments, I still read some papers about long term object tracking.

The experiments are as follows: On the basis of a simple siamese tracker(SiamFC++), I modified it to a long term tracker,which needs a  mechanism to judge whether the target object is absent. The most concise way is to exploit the confidence score. So I want to find a relationship between the score and IOU. The specific results are shown in the figure.

From the picture, we can see that the fluctuation trend of score is basically consistent with that of iou. But only relying on the score is not enough. So we may conduct experiments on  the sequence of scores.

 

The new papers are as follows:

I change my mind that I should read more new papers instead of conducting experiments in haste. The specific analysis of  papers are as follows:

1. Adaptive and Background-Aware Vision Transformer for Real-Time UAV Tracking

The paper’s purpose:

To slove the problem that traditional CNN is too slow.

Contributions:

(1) The paper proposes a framework, where feature learning and template-search coupling are integrated into an efficient one-stream ViT to avoid an extra heavy relation modeling module.

(2)The proposed Aba-ViT exploits an adaptive and background-aware token computation method to reduce inference time.

(3)This approach adaptively discards tokens based on learned halting probabilities, which a priori are higher for background tokens than target ones.

(4) Very Fast ! 180 fps!

Personal Evaluation:

Too fast! And the paper provide the code. We can let it  act as main tracker.

 

2. Boosting UAV Tracking With Voxel-Based Trajectory-Aware Pre-Training

The paper’s purpose:

(1)To slove the problem that the siamese tracker was trapped when facing multiple views of object in consecutive frames.

(2)The  general image-level pretrained backbone can overfit to holistic representations, causing the misalignment to learn object-level properties in UAV tracking.

Contributions:

(1) Fully exploit the stereoscopic representation for UAV tracking. Specifically, a novel pre-training paradigm method is proposed.

(2) Through trajectory-aware reconstruction training (TRT), the capability of the backbone to extract stereoscopic structure feature is strengthened without any parameter increment.

Personal Evaluation:

No code.  The paper is related to 3D tracking.

3. Compact Transformer Tracker with Correlative Masked Modeling

The paper’s purpose:

(1) Proving that the traditional selfattention structure is sufficient for information aggregation, and structural adaption is unnecessary.

Contributions:

(1) The paper attaches a lightweight correlative masked decoder which reconstructs the original template and search image from the corresponding masked tokens.

(2) The structure is very simple.

Personal Evaluation:

Release code.  The evaluation on benchmark is very high. Nice paper. But the analysis of network is beyond my ability.

 

4. Continuity-Aware Latent Interframe Information Mining for Reliable UAV Tracking

The paper’s purpose:

(1) Mainly focuses on explicit information to improve tracking performance, ignoring potential interframe connections.

Contributions:

(1) A network  can generate highly-effective latent frame between two adjacent frames.

(2) Fully explore continuity-aware spatial-temporal information.

Personal Evaluation:

Release code. The innovation points are very innovative.