High Resolution Image Quality Database
This addresses a data gap for researchers and developers working on BIQA models for high-resolution digital photography and displays, but it is incremental as it primarily provides a new dataset.
The authors tackled the lack of high-resolution data for blind image quality assessment (BIQA) by creating a new database (HRIQ) with 1120 images at 2880x2160 pixels and collecting subjective ratings, showing that BIQA models trained on low-resolution images are suboptimal for high-resolution ones.
With technology for digital photography and high resolution displays rapidly evolving and gaining popularity, there is a growing demand for blind image quality assessment (BIQA) models for high resolution images. Unfortunately, the publicly available large scale image quality databases used for training BIQA models contain mostly low or general resolution images. Since image resizing affects image quality, we assume that the accuracy of BIQA models trained on low resolution images would not be optimal for high resolution images. Therefore, we created a new high resolution image quality database (HRIQ), consisting of 1120 images with resolution of 2880x2160 pixels. We conducted a subjective study to collect the subjective quality ratings for HRIQ in a controlled laboratory setting, resulting in accurate MOS at high resolution. To demonstrate the importance of a high resolution image quality database for training BIQA models to predict mean opinion scores (MOS) of high resolution images accurately, we trained and tested several traditional and deep learning based BIQA methods on different resolution versions of our database. The database is publicly available in https://github.com/jarikorhonen/hriq.