1,722,314 research outputs found
Enhancing Sensor Pattern Noise for Source Camera Identification
No full textThe sensor pattern noise (SPN) based source camera identification technique has been well established. The common practice is to subtract a denoised image from the original one to get an estimate of the SPN. Various techniques to improve SPN's reliability have previously been proposed. Identifying the most effective technique is important, for both researchers and forensic investigators in law enforcement agencies. Unfortunately, the results from previous studies have proven to be irreproducible and incomparable-there is no consensus on which technique works the best. Here, we extensively evaluate various ways of enhancing the SPN by using the public "Dresden" database. We identify which enhancing methods are more effective and offer some insights into the behavior of SPN. For example, we find that the most effective enhancing methods share a common strategy of spectrum flattening. We also show that methods that only aim at reducing the contamination from image content do not lead to satisfying results, since the non-unique artifacts (NUA) among different cameras are the major troublemaker to the identification performance. While there is a trend of employing sophisticate methods to predict the impact of image content, our results suggest that more effort should be invested to tame the NUAs.</p
Description of a new species of Meganola Dyar, 1898 (Lepidoptera, Nolidae, Nolinae), with new records of Meganola in China
No full textZhang, Bei-Bei, Hu, Yan-Qing (2022): Description of a new species of Meganola Dyar, 1898 (Lepidoptera, Nolidae, Nolinae), with new records of Meganola in China. Zootaxa 5194 (2): 296-300, DOI: https://doi.org/10.11646/zootaxa.5194.2.1
New records of the genus Nola Leach, 1815 (Lepidoptera, Nolidae, Nolinae) from China, with description of a new species
No full textChen, Zhe-Jing, Zhang, Bei-Bei, Hu, Yan-Qing (2022): New records of the genus Nola Leach, 1815 (Lepidoptera, Nolidae, Nolinae) from China, with description of a new species. Zootaxa 5124 (2): 245-250, DOI: 10.11646/zootaxa.5124.2.1
Meganola postmediana Laszlo, Ronkay & Witt 2010
No full textMeganola postmediana László, Ronkay & Witt, 2010 (Figs 12–14) Meganola postmediana László, Ronkay & Witt, 2010: 48. Type-locality: Prov. Chiang Mai, North Thailand. Specimens examined. 2 males, Liupanshui, 2059 m, Guizhou Prov., 16.vii.2021, coll. Yan-qing Hu & Yong Yu. Distribution. China (Guizhou), Thailand. Remarks. This is a new record from China.Published as part of Zhang, Bei-Bei & Hu, Yan-Qing, 2022, Description of a new species of Meganola Dyar, 1898 (Lepidoptera, Nolidae, Nolinae), with new records of Meganola in China, pp. 296-300 in Zootaxa 5194 (2) on page 297, DOI: 10.11646/zootaxa.5194.2.10, http://zenodo.org/record/714705
FIGURES. 12–23 in Description of a new species of Meganola Dyar, 1898 (Lepidoptera, Nolidae, Nolinae), with new records of Meganola in China
No full textFIGURES. 12–23. Meganola spp., male habitus and genitalia. 12–14. Meganola postmediana. 12. Male habitus; 13, 14. Male genitalia. 15–17. Meganola mikabo. 15. Male habitus; 16, 17. Male genitalia. 18–20. Meganola calligrapha. 18. Male habitus; 19, 20. Male genitalia. 21–23. Meganola nanlinga. 21. Male habitus; 22, 23. Male genitalia.Published as part of Zhang, Bei-Bei & Hu, Yan-Qing, 2022, Description of a new species of Meganola Dyar, 1898 (Lepidoptera, Nolidae, Nolinae), with new records of Meganola in China, pp. 296-300 in Zootaxa 5194 (2) on page 299, DOI: 10.11646/zootaxa.5194.2.10, http://zenodo.org/record/714705
Meganola nanlinga Hu, Laszlo, Ronkay & Wang 2013
No full textMeganola nanlinga Hu, László, Ronkay & Wang, 2013 (Figs 21–23) Meganola nanlinga Hu, László, Ronkay & Wang, 2013: 596. Type-locality: Nanling, Guangdong Prov., China. Specimens examined. 4 males & 2 females, Yuqing county, 876 m, Zunyi, Guizhou Prov., 23–24.vii.2021, coll. Yan-qing Hu & Yong Yu. Distribution. China (Guizhou, Guangdong, Guangxi, Jiangxi, Taiwan). Remark. This is a new record from Prov. Guizhou.Published as part of Zhang, Bei-Bei & Hu, Yan-Qing, 2022, Description of a new species of Meganola Dyar, 1898 (Lepidoptera, Nolidae, Nolinae), with new records of Meganola in China, pp. 296-300 in Zootaxa 5194 (2) on pages 299-300, DOI: 10.11646/zootaxa.5194.2.10, http://zenodo.org/record/714705
Meganola strigulosa
No full textMeganola strigulosa (Staudinger, 1887) (Figs 4–6) Nola strigulosa Staudinger, 1887: 180. Type-locality: Vladivostok, Askold I, Russia. Roeselia satoi: Inoue, 1970: 4. Meganola strigulosa: Kononenko, 2010: 145; Sasaki, 2011: 179; Cha et al., 2019: 226. Synonymy Meganola wulongensis Hu, Yu & Wang, 2019: 292. Type-locality: Wulong, Chongqing, China, syn. n. Distribution. China (Northeast, Chongqing, Sichuan, Guizhou), Russia (South of the Far East), Korea, Japan.Published as part of Zhang, Bei-Bei & Hu, Yan-Qing, 2022, Description of a new species of Meganola Dyar, 1898 (Lepidoptera, Nolidae, Nolinae), with new records of Meganola in China, pp. 296-300 in Zootaxa 5194 (2) on page 297, DOI: 10.11646/zootaxa.5194.2.10, http://zenodo.org/record/714705
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