Computer vision conferences ranking. , the next 3DV conference will be held in 2024, not 2023.

) CVPR is a conference dedicated to computer vision and pattern recognition. firstback. 3 RESULTS. CEE specializes in event management including registration, audience development, and program design, as well as sponsorship, publications, and financial management for over 2,000 annual Sep 1, 2021 · The Rating Algorithm The Sources. Jul 18, 2023 · In addition to CVPR 2023, IEEE CS’ International Conference on Computer Vision (2021) earned the #3 spot on Research. Oct 3, 2013 · Most existing bottom-up methods measure the foreground saliency of a pixel or region based on its contrast within a local context or the entire image, whereas a few methods focus on segmenting out background regions and thereby salient objects. 531. - 24. 84th Annual Meeting of the Academy of Management (AOM 2024) Jul 1, 2022 · Los Alamitos, California – 01 July 2022 – 2022 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), the largest gathering of professionals from across the world and from every aspect of the computer vision, machine learning (ML), and artificial intelligence (AI) industries, successfully concluded this week, breaking records with over 10,250 conference registrants and 2000 History. com, one of the prominent sites for Computer Science research offering accurate analyses on scientific publications since 2014. Date: July 11-12, 2024. International Conference on Learning Representations: 304: 584: 5. The position on the list is based on Impact Score values gathered on 21-12-2022. The conference proceedings will This year, the conference, which took place 18-22 June in Vancouver, B. In 2021, UCF’s Center for Research in Computer Vision (CRCV) had 6 papers accepted into the CVPR conference, covering topics like Anomaly Detection, Few-Shot Learning, Capsule Networks, and more. CCVPR 2024 is a great platform that brings together Asian Conference on Computer Vision (ACCV) conference is ranked/rated B according to the CORE 2018 ranking. There are timely rounds for submission of requests, both Of the 100 top-ranked journals in 2020, six are AI conference publications. Aug 23, 2023 · ODSC hosts one of the largest gatherings of professional data scientists, with major conferences in the USA, Europe, and Asia. C. 71%) The conference focuses on Artificial intelligence, Computer vision, Pattern recognition, Feature extraction and Machine learning. Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition. (. The Artificial intelligence works featured in International Conference on Acoustics, Speech, and Signal Processing incorporate elements from Machine learning and Natural language processing. It has a number of changes from the original csrankings page. Aug 10, 2023 · This ranking of leading conferences in Canada for Computer Science was created by Research. 3 )です。. That paper, presented at the 2015 IEEE International Conference on Computer Vision in Chile, Feb 11, 2021 · The IEEE Conference on Computer Vision and Pattern Recognition (CVPR) is one of the top computer vision conferences in the world. IEEE/CVF Winter Conference on Applications of Computer Vision (WACV) is the premier international computer vision event comprising the main conference and several co-located workshops and tutorials. ICALP – International Colloquium on Automata, Languages and Programming. Note: For KDD and TheWebConf (formerly known as WWW ), only the papers from research track are counted. The position on the list is based on Impact Score metrics aggregated on 21-12-2022. RankingConferenceH5-indexImpact Score1CVPR : IEEE/CVF Conference on Computer Vision and Pattern Recognition29951. com, one of the leading sites for Computer Science research supplying accurate information on scientific publications since 2014. 4. Source. It is noteworthy that the 154 top quartile conferences have 消姻曲络谆 嘉到买枣 Impact Score 苍翩 Top 100. NIPS, ICML, CVPR, JMIV, SPIE. It is based on the idea that 'all citations are not created equal'. The study on Artificial intelligence presented in Computer Vision and Pattern Recognition intersects with subjects under the field of Algorithm. Journal of Cleaner Production: 272: 359: 7 Mar 4, 2021 · According to Google Scholar Metrics, the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) is ranked 5th in the h5-index rankings. WACV 2023 January 3-7. 2726. Instead of considering the contrast between the salient objects and their surrounding regions, we consider both foreground and background cues in a 2024-07-22 - 2024-07-26 Lisbon LEARN MORE. May 17, 2022 · The ranking of top conferences in Online for Computer Science was published by Research. Face & Gestures (co-located with WACV 2023) Workshops January 5 & 6, Main Conference January 7 & 8. Neural Information Processing Systems: 337: 614: 3. 1% (2765/6127) -. com, one of the leading platforms for Computer Science research providing trusted information on scientific contributions since 2014. Top Publication Venues in Computer Science. CVPR Ranking and Rating Metrics. I've also added faculty from non-CS departments (specifically programs like UW's HCDE and Nov 10, 2021 · The ranking of top conferences in Canada for Image Processing & Computer Vision was published by Research. - 28. Registration to VISAPP allows free access to all other VISIGRAPP conferences. The algorithm uses three rankings/ratings of computer science conferences: The CORE 2021 Conference Rating - Australians have a long-standing experience in ranking publication venues; CORE (the Computing Research and Education Association of Australia) has been developing its own rating of computer science conferences since 2008, first on its own, and then as Jun 4, 2023 · The conference covers a variety of subjects, including Artificial intelligence, Speech recognition, Algorithm, Pattern recognition and Computer vision. A graph of 108M citations received by 5. . It was based on a careful analysis of as much Dec 28, 2021 · IEEE Conferences on Computer Vision and Pattern Recognition (CVPR 2022) CVPR is the top international conference on computer vision, comprising the main conference and several co-located workshops and short courses. " Welcome to the complete calendar of Computer Image Analysis Meetings, Workshops, Conferences and Special Journal Issue Announcements. IEEE Workshop on Applications of Computer Vision (WACV) conference is ranked/rated A according to the CORE 2018 ranking. at the Seattle Convention Center. The rankings are managed by the CORE Executive Committee, with periodic rounds for submission of requests for addition or reranking of conferences. 982NeurIPS : Neural Information Processing Systems (NIPS)19833. CCC - Computational Complexity Conference. [download table] WACV 2024. 1466. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals Discover the latest ranking, metrics and conference call for papers for 18th European Conference on Computer Vision ECCV 2024. DataConnect. The British Machine Vision Conference (BMVC) is the British Machine Vision Association’s (BMVA) annual conference on machine vision, image processing, and pattern recognition. The best computer vision conference has the lowest acceptance ratio. Pattern Recognition Letters: 87: 147: 12. CiteSeerX A citation counting and management system, that tries to specialize in CS. Most notably, it includes a Social Media/Social Computing category (which has CSCW and ICWSM) and adds InfoVis, WSDM, and ICDM. ) STOC: ACM Symposium on Theory of Computing (since 1969) (. 45. The British Machine Vision Conference (BMVC) is the British Machine Vision Association's (BMVA) annual conference on machine vision, image processing, and pattern recognition. e. This ranking of top conferences in Malaysia for Computer Science was generated by Research. It is considered to be one of the top conferences in computer vision, alongside CVPR and ECCV, [1] [2] [3] and it is held on years in which ECCV is not. ) 2021 IEEE/CVF International Conference on Computer Vision Workshops (ICCVW) Oct. This year's edition of 3DV will be moved from the fall of 2023 to the spring of 2024, i. Conference content hosted on the virtual platform will be available exclusively to CVPR registered attendees. Paper Digest Team analyze all papers published on CVPR in the past years, and presents the 10 most influential papers for each year. The IEEE / CVF Computer Vision and Pattern Recognition Conference (CVPR) is the premier annual computer vision event comprising the main conference and several co-located Qualis (2012) This conference ranking has been published by the Brazilian ministry of education and uses the H-index as performance measure for conferences. We propose a no-reference image quality assessment (NR-IQA) approach that learns from rankings (RankIQA). British Machine Vision Conference. The following are the journals and conferences in computer science that have published at least 100 papers (2003–2013), with at least 5 citations per paper during the past 10 years. Tables 1-4 show the result of our data analysis effort. With its high quality and low cost, it provides an exceptional value for students, academics and industry researchers. The IEEE / CVF Computer Vision and Pattern Recognition Conference (CVPR) is the premier annual computer vision event comprising the main conference and several co-located Nov 3, 2023 · Discover the latest ranking, metrics and conference call for papers for 8th International Conference on Computer Vision & Image Processing (CVIP-2023),. com, one of the leading websites for Computer Science research offering credible information on scientific output since 2014. Hosted by the IEEE Computer Society (IEEE CS) and the Computer Vision Foundation (CVF), CVPR is the premier CSRankings is a metrics-based ranking of top computer science institutions around the world. 2024 Conference. FOCS – IEEE Symposium on Foundations of Computer Science. A. Apr 15, 2024 · A ranking of computer science conferences with A* being the best conferences according to this system. Montreal, BC, Canada. Jun 2, 2015 · ICMV 2024 will take place in Edinburgh, UK during October 10-13, 2024. MLIoT 2024. Call for Papers: 21st Conference on Robots and Vision (CRV 2024) • Location: Guelph, Ontario, Canada • Dates: May 27 - May 31, 2024 • The 21st Conference on Robots and Vision (CRV 2 COMPUTER VISION ROBOTICS ARTIFICIAL INTELLIGENCE. ) ICALP: International Colloquium on Automata, Languages and Programming (since 1973) (. Top paper categories included 3D computer vision; image and video generation; and understanding humans in The ranking of leading conferences for Machine Learning & Artificial intelligence was created by Research. Huddersfield, UK. 1613. 1985–present. Main Conference January 4-6. Over the course of the last 9 years, this journal has experienced varying rankings, reaching its highest position of 8903 in 2021 and its lowest position of 14254 in 2016. With first-in-class technical content, a main program, tutorials, workshops, a leading-edge expo, and an attendance of more than 7,500 people annually, CVPR The 34. 493ICCV : IEEE/CVF Int…. The position in the ranking is based on Impact Score data collected on 21-12-2022. Over the course of the last 9 years, this conference and proceedings has experienced varying rankings, reaching its highest position of 32 in 2021 Jun 19, 2020 · New Orleans, Louisiana. Aug 10, 2024 - Aug 11, 2024. 38. Mon Jun 17th through Fri Jun 21st, 2024. A recorded version will be posted shortly. CVIP is a premier annual conference focused on Computer Vision and Image Processing, with its high quality; it provides a great 2024 Conference. Pressure Vessels & Piping Conference (PVP) 2024-07-29 - 2024-08-02 Hyatt Regency Bellevue, Bellevue, WA LEARN MORE. , Canada, unveiled five key trends shaping the evolution of the community: Render the real. The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. The CORE Conference Ranking provides assessments of major conferences in the computing disciplines. 11 2021 to Oct. com, one of the prominent sites for Computer Science research supplying credible analyses on scientific contributions since 2014. The spot in the ranking is based on Impact Score values collected on 21-12-2022. ISAAC – International Symposium on Algorithms and Computation. The emergence of Machine Vision as a ubiquitous platform for innovations has laid the foundation for the rapid growth of the Information. For each conference, we computed the mean number of 2022 citations (the so-called impact factor) as well as the more robust median. June 21 – 23 – Expo. This ranking is governed by the CORE Executive Committee. com, one of the primary platforms for Computer Science research providing accurate analyses on scientific contributions since 2014. Jun 18, 2023 · Computer vision (42. IEEE International Conference on Image Processing (ICIP) 66: 95: 14. The IEEE / CVF Computer Vision and Pattern Recognition Conference (CVPR) is the premier annual computer vision event comprising the main conference and several co-located Top CS venues. com's list, with an impact score of 40. The IEEE/CVF Conference on Computer Vision and Pattern Recognition 2024. June 21 – 24 – Main Conference. 10. This ranking list is automatically co Welcome to the complete calendar of Computer Image Analysis Meetings, Workshops, Conferences and Special Journal Issue Announcements. IEEE/CVF Conference on Computer Vision and Pattern Recognition: 440: 689: 2. The International Conference on Computer Vision ( ICCV) is a research conference sponsored by the Institute of Electrical and Electronics Engineers (IEEE) held every other year. It was based on a meticulous evaluation of Jun 21, 2023 · VANCOUVER, 21 June 2023 – Today, the 2023 Computer Vision and Pattern Recognition (CVPR) Conference Awards Committee announced the winners of its prestigious Best Paper Awards, which annually recognize top research in computer vision, artificial intelligence (AI), machine learning (ML), augmented and virtual reality (AR/VR), deep learning, and much more. The New England Journal of Medicine International Conference on the Unified Modeling Language (formerly UML) A. Jan 16, 2023 · 18. In total, 44,746 papers were published across the 2020 and 2021 editions of the 88 considered conferences. IEEE/CVF International Conference on Computer Vision Workshops (ICCVW) 80: 135: 13. 25. Jan 19, 2023 · This ranking of best conferences for Image Processing & Computer Vision was created by Research. 331. November 2024, Glasgow, UK. To address the problem of limited IQA dataset size, we train a Siamese Network to rank images in terms of image quality by using synthetically generated distortions for which relative image quality is known. For ICDM, submissions of short paper and those of long paper are in the same session and the decision of the paper type is made according to its quality. It was based on a detailed examination of as much Feb 1, 2019 · With 361 computer science journals ranked in the top quartile in the CiteScore database, the 154 top quartile conferences would then constitute 30% of all 515 top publication venues in the field (and the 67 top 10% conferences would make up 32% of all 207 top 10% publication venues). IEEE--2024 13th International Conference on Computer Technologies and Development (TechDev 2024) Oct 9, 2024 - Oct 11, 2024. Feb 29, 2024 · College Rankings Career Resources 18th European Conference on Computer Vision ECCV 2024 29-09-2024 - 04-10-2024 - Milan. June 19, 20, 2022 – Workshops. Starting in 1998, it was a biennial international conference till 2021, providing a forum for the presentation of technological advances and research Publication h5-index h5-median; 1. All registrations will be full passport which will allow you to attend any session for WACV and FG. 28M academic papers made by 4,264 universities in the World was used to calculate publications' ratings, which then were adjusted for release dates and added to final scores. 0% (~2812/5796) -. The position in the ranking is based on Impact Score values aggregated on 21-12-2022. Europe 2021 – Virtual Conference, Jun 8th – Jun 10th. IEEE/CVF Conference on Computer Vision and Pattern Recognition: 440: 689: 3. Jul 18, 2023 · In addition to CVPR 2023, IEEE CS' International Conference on Computer Vision (2021) earned the #3 spot on Research. The Indian Conference on Computer Vision, Graphics and Image Processing (ICVGIP) is India’s premier conference in Computer Vision, Graphics, Image Processing and related fields. Feb 7, 2024 · The IEEE/CVF Conference on Computer Vision and Pattern Recognition 2024 (CVPR) CVPR 2024 Overview : CVPR stands out as a cornerstone event for those in the field of computer vision. The position on the list is based on Impact Score metrics collected on 21-12-2022. ICASSP'23. IEEE International Conference on Computer Vision (ICCV) conference is ranked/rated A* according to the CORE 2018 ranking. CVPR 2022 conference program summary: June 19, 20, 2022 – Workshops. Conference short name: ECCV. Apr 12, 2023 · Best Computer Science Conferences in Malaysia. 90%) Pattern recognition (32. Virtual Conference. Oct 31, 2023 · The IET Computer Vision is currently ranked 13067 out of 27955 Journals, Conferences, and Book Series in the latest ranking. Side-by-side, the use of mobile and wireless devices such as PDA, laptop, and cell phones for accessing the Internet has paved the ways Mar 29, 2024 · Guelph, Ontario, Canada. Nature: 488: 745: 2. November 2023, Aberdeen, UK. Based on the H-index percentiles, the conferences are grouped into performance classes that range from A1 (=best), A2, B1, , B5 (=worst). [1] [2] [3] According to Google Scholar Metrics (2022), it is the highest impact computing venue. Location: Columbus Jan 31, 2023 · 3位の Science誌 も変わらずランクインしておりました。. June 21 - 24 – Main Conference. NAACL. CVIP 2022, the 7 th International Conference on Computer Vision & Image Processing will be held at Visvesvaraya National Institute of Technology Nagpur, Maharashtra, INDIA from November 04-06, 2022. , the next 3DV conference will be held in 2024, not 2023. Qualis (2012) This conference ranking has been published by the Brazilian ministry of education and uses the H-index as performance measure for conferences. About CORE 2018 ranking: The CORE Conference Ranking is a measure to assess the major conference in the computing field. Paper Digest Team analyzes all papers published on CVPR in the past years, and presents the 15 most influential papers for each year. Decisions are made by academic committees based on objective data requested as part of the 2024 International Joint Conference on Computer Vision and Pattern Recognition (CCVPR 2024), organized by Shanghai Jiao Tong University and co-organized by Zhejiang University of Technology, will take place in the modern city of Shanghai, China from August 30th to September 1st, 2024. 2nd International Conference on Machine Learning and IoT. 658. Frequency. This ranking list is automatically c 01/07 - Main conference Paper Visualizations here and Workshop Visualizations here 01/04 – Reinforcement Learning and Bandits for Computer Vision has been cancelled. Feb 29, 2024 · Below is a list of best universities in the World ranked based on their research performance in Computer Vision. British Accueil - International Conference on Computer Vision - October 2-6, 2023 - Paris - France - ICCV2023 Feb 3, 2022 · The IEEE Conference on Computer Vision and Pattern Recognition (CVPR) is one of the top computer vision conferences in the world. For many vision researchers, we aim for CVPR, then just leave the manuscript on arxiv if it didn't get it and can't be improved, and work on another paper. IEEE International Conference on High Voltage Engineering and Application (ICHVE 2024) 2024-08-18 - 2024-08-23 Berlin LEARN MORE. 135771. CVPR 2022 will be a hybrid conference, with both in-person and virtual attendance options. ISBN: 978-1-6654-0191-3. Source data obtained from Microsoft Academic Search. com Focus: Computer Vision "The Conference on Computer Vision and Pattern Recognition (CVPR) is an annual conference on computer vision and pattern recognition, which is regarded as one of the most important conferences in its field. West 2021 – San Francisco, Nov 15th – Nov 18th. Nature, the number one publication, has a h5-index of 414. Advanced Materials: 327: 420: 4. Apr 10, 2024 · The ranking of top conferences for Graphics and Computer-Aided Design was generated by Research. It is one of the major international conferences on computer vision and related areas This ranking of best conferences for Computational Theory and Mathematics was devised by Research. When and where: East 2021 – Virtual Training Conference Mar 30th – Apr 1st. It uses ranks such as A* (=exceptional), A (=excellent), B (=good to very good), and C (=sound and satisfactory). これも順位は変わらずですが、昨年に比べ3 About CORE ranking 2020: The CORE Conference Ranking is a measure to assess the major conference in the computing field. May 1, 2018 · Computer Science Rankings (beta) This is an experimental fork. 60, resulting in IEEE CS claiming two of the top three highest-ranking events. IEEE/CVF Winter Conference on Applications of Computer Vision (WACV) 109: 162: 10. Jul 20, 2024. Research emphasis this year was on bringing technology closer to reality. 70507. 01/03 – The virtual site is LIVE! If you are registered, please use the email address you registered wtih. It is one of the major international conferences on computer vision and related areas ICVGIP 2024. FCT – International Symposium on Fundamentals of Computation Theory. The conference will have tutorials, workshops, and poster presentations, perfect for learning about all of the most up-to-date research and theory in the specialty of computer vision and pattern recognition. Waikoloa, Hawaii. The spot on the list is based on Impact Score data collected on 21-12-2022. Jun 19, 2023 · International journal of computer assisted radiology and surgery is a journal covering the categories related to Computer Graphics and Computer-Aided Design (Q1); Computer Vision and Pattern Recognition (Q1); Radiology, Nuclear Medicine and Imaging (Q1); Surgery (Q1); Biomedical Engineering (Q2); Computer Science Applications (Q2); Health Informatics (Q2); Medicine (miscellaneous) (Q2). com, one of the leading platforms for Computer Science research supplying accurate analyses on scientific output since 2014. IEEE/CVF International Conference on Computer Vision: 291: 484: 6. Decisions are made by academic committees based on objective data requested as part of the Computer Vision Conferences 2024 2025 2026 is for the researchers, scientists, scholars, engineers, academic, scientific and university practitioners to present research activities that might want to attend events, meetings, seminars, congresses, workshops, summit, and symposiums. With its high quality and low cost, it provides an exceptional value for students, academics, and industry researchers. There are timely rounds for submission of requests, both for the addition and re-ranking of conferences. 2731. 3DV'23 is now 3DV'24! This event has provided a premier platform for disseminating Apr 1, 2024 · This ranking of leading conferences in India for Computer Science was created by Research. . com, one of the primary sites for Computer Science research offering credible information on scientific contributions since 2014. Meetings are listed by date with recent changes noted. Includes Computer Vision, Image Processing, Iamge Analysis, Pattern Recognition, Document Analysis, Character Recognition. It also is widely regarded as the most influential conference across all scientific disciplines, ranking fourth in the Google Scholar publications metric with a h5-index of 356. Oct 31, 2023 · The Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition is currently ranked 199 out of 27955 Journals, Conferences, and Book Series in the latest ranking. Annual. 5. IEEE Conference on Computer Vision and Pattern Recognition (CVPR) conference is ranked/rated A* according to the CORE 2018 ranking. The 11th International Conference on 3D Vision will be held in-person in Davos, Switzerland on March 18-21, 2024. Some seemingly second tier conferences are actually top conferences in their sub-field. June 2023 Location: Vancouver, Canada h5-index: 389 Website: cvpr2023. ) FOCS: IEEE Symposium on Foundations of Computer Science (since 1959) (. そしてAI関連分野トップは、4位にランクインしたコンピュータビジョン分野の国際会議 CVPR (参照: 「CVPR2022」トップカンファレンス定点観測 vol. VISIGRAPP 2024 will be held in conjunction with ICISSP 2024. The spot in the ranking is based on Impact Score data gathered on 21-12-2022. These ranked image sets can be automatically generated without laborious human Dec 15, 2023 · Discover the latest ranking, metrics and conference call for papers for 14th Indian Conference on Computer Vision, Graphics and Image Processing. Apr 11, 2022 · The CVPR is the premier computer vision and pattern recognition conference. ICASSP'24. com’s list, with an impact score of 40. Computer Science conferences - Accepted Papers, Deadline, Impact Factor & Score 2024. Nov 6, 2022 · Introduction. 17 2021. IEEE TechDev 2024. -22. ACM/IEEE International Conference on Modelling, Analysis and Simulation of Wireless and Mobile Systems. The position in the ranking is based on Impact Score values gathered on 21-12-2022. ICCV Ranking and Rating Metrics. June 21 - 23 – Expo. Jun 12, 2023 · 2024 Conference. Registration to VISIGRAPP allows free access to the ICISSP About CVPR 2020 CVPR is the premier annual conference on computer vision and pattern recognition. The Conference on Computer Vision and Pattern Recognition ( CVPR) is an annual conference on computer vision and pattern recognition, which is regarded as one of the most important conferences in its field. Sep 16, 2019 · In computer science, the most important ranking is the one maintained by CORE, the Computing Research and Education Association of Australasia. Overall, 31 IEEE and IEEE CS conferences were recognized, including: The 2023 Research. Click on a name to go to a faculty member's home page. Ranking type: CORE 2018. Workshops January 3 & 7. 20. 5194. Jun 8, 2022 · Details on the full CVPR 2022 schedule can be found on the conference website under the CVPR program menu. com, one of the primary websites for Computer Science research supplying trusted information on scientific publications since 2014. They make the criteria for the different ranks explicit in a formal ranking description Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition. 70 29-02-2024 IEEE Conferences, Events & Experiences (CEE) is a dedicated partner made up of event industry experts driven to shape innovative and high-quality events. Click on a chart icon (the after a name or institution) to see the distribution of their publication areas as a . Click on a triangle ( ) to expand areas or institutions. International Journal of Computer Vision: 97: 173: 11. 100987. 60, resulting in IEEE CS claiming two of VISAPP is part of VISIGRAPP, the 19th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications. 5199. MSWIM. 91574. WACV Ranking and Rating Metrics. North American Association for Computational Linguistics. conference and proceedings. com Best Computer Aug 10, 2023 · This ranking of best conferences for Biomedical & Medical Engineering was generated by Research. The 35. When: May 27, 2024 - May 31, 2024 Submission Deadline: Feb 18, 2024. thecvf. You will then receive a ICCV, CVPR, ICML, SIGGRAPH, NIPS. gg nm en yz te gy ut qi ff rh