GB/T 38199-2019 in English

VALID

Evaluation methods for optical image compression quality of land observation satellites

Issued on:2019-10-18
Implemented on:2020-05-01
File Format:PDF
Delivery:Within 1 day

Price(USD)： $128.00
$125.00

Standard No:	GB/T 38199-2019
Document status:	VALID
Title in English:	Evaluation methods for optical image compression quality of land observation satellites
Title in Chinese:	陆地观测卫星光学影像压缩质量评价方法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Within 1 day
Issued on:	2019-10-18
Implemented on:	2020-05-01
ICS Classification:	33.200-Telecontrol. Telemetering
Chinese Classification:	V80-Aerospace ground equipment in general
Professional Classification:	GB-National Standard
Related Topics:	Quality Evaluation Image Measurement Quality star optics optical imager Potou optical imager measurement Quality Evaluation starlight observation satellite Image Measurement Quality observation satellite optical image earth observation satellite Astronomers previous satellite images GBT38199 GB/T 38199-2019 Optical image measuring instrument accuracy Compressed air quality testing method Optical imager standard Quality evaluation of groundwater vanadium Methodological evaluation of colloidal gold method Accuracy evaluation method of image measuring instrument Evaluation of spectral quality

《GB/T 38199-2019陆地观测卫星光学影像压缩质量评价方法》由TC425（全国宇航技术及其应用标准化技术委员会）归口，主管部门为国家标准化管理委员会。

Introduction

1. Background and significance of standard formulation

With the increase in the number of land observation satellites launched in my country and the in-depth development of remote sensing technology in scientific research and application fields, the requirements for image quality are constantly increasing. In order to standardize the evaluation of optical image compression effects and ensure the effectiveness of compression technology in data storage and transmission, the GB/T 38199-2019 standard came into being.

2. Comparison of standard frameworks

Standard dimensions	Simulated data source requirements	Subjective evaluation	Objective evaluation	Evaluation result judgment
Simulated data source requirements	The spatial resolution and band settings are consistent with those of actual satellites; the images cover a variety of terrains and phases.	- Soft copy display: monitor calibration, support 100%~400% magnification ratio- Hard copy output: print media selection and resolution setting	Block standard deviation ratio (≥80%), grayscale difference mean (<0.4), peak signal-to-noise ratio (≥42dB or 45dB)	Comprehensive score ≥7 points and subjective score ≥3 points are acceptable

3. Implementation suggestions and application scenarios

Hardware equipment selection suggestions:Use high-precision scanners and image processing equipment with matching quantization bits to ensure the authenticity of the simulated data source.

Evaluation process optimization suggestions:In the subjective evaluation stage, it is recommended to use a team of more than 10 experts and combine statistical methods to improve the reliability of the results.

Future technology evolution direction: Explore automatic evaluation algorithms based on deep learning to improve the efficiency and accuracy of image quality assessment.

More samples: DL/T 368-2010 NB/T 47013.2-2015 QC/T 942-2021

Sample only — not a preview of GB/T 38199-2019