Tsarin Ƙira da Gyaran Kurakuran Aunawar Laser a Ƙarƙashin Tasirin Pixels Guda da aka Haɗa

1. Gabatarwa

Aunawar laser ta lokacin tafiya ta bugun jini ginshiƙi ne na samun bayanan sararin samaniya na zamani. Yayin da ci gaba a cikin masu ƙididdige lokacin bugun jini (Abshire et al., 1994) suka ba da damar yin ma'aunai masu madaidaicin madaidaici, manyan kurakuran tsari suna ci gaba a cikin rikitattun yanayi na zahiri. Wannan binciken yana magance kalubalen da ya shafi Tasirin Pixels Guda da aka Haɗa, tushen kuskure da aka haɗa lokacin da ƙafar laser ta yi hulɗa da saman da ba su ci gaba ba ko kuma ta faɗi a kusurwar karkata. Wannan tasirin, wanda ya ƙunshi duka matsalar pixels guda na al'ada da tasirin kusurwar faɗuwa, yana gurɓata bayanan aunawa ta hanyar gabatar da bayanan kewayo da yawa a cikin ƙafar ma'auni guda ɗaya, don haka yana lalata ingancin bayanai don aikace-aikace a cikin bincike, kewayawa mai cin gashin kansa, da ƙirar 3D.

2. Bayanan Ka'idoji & Bayyana Matsala

2.1 Tasirin Pixels Guda

Yana faruwa ne lokacin da ƙafar katakon laser ta ratsa saman da yawa a nesa daban-daban (misali, gefen gini da ƙasa). Idan bambancin zurfin ya yi ƙasa da ƙudurin kewayon kayan aikin ($\Delta R = c \cdot \tau / 2$, inda $c$ saurin haske kuma $\tau$ faɗin bugun jini), mai auna nesa yana karɓar bugun jini mai lalacewa guda ɗaya, yana fassara shi da kuskure a matsayin kewayon guda (Herbert & Krotkov, 1992; Xiang & Zhang, 2001). Wannan yana haifar da babban kuskuren tsari wanda ba na layi ba.

2.2 Tasirin Kusurwar Faɗuwa

Lokacin da katakon laser ya bugi wani samu a kusurwar da ba ta kai tsaye ba, ƙafar tana tsawaita daga da'ira zuwa elli. Bisa ga watsawar Lambertian, wannan lalacewar tana raunana siginar kuma tana yada shi cikin lokaci, yana sa dabarar lokacin mai auna nesa ta yi kuskuren ƙididdige nesa (Soudarissanane et al., 2009). Kuskuren yana ƙaruwa tare da kusurwar faɗuwa.

2.3 Tasirin Pixels Guda da aka Haɗa

Babban fahimtar wannan aikin shine haɗa tasirin biyu da ke sama. Dukansu sun samo asali ne daga dalili guda na zahiri: ƙafar laser da ta lalace tana ɗauke da kewayoyi masu tasiri da yawa. Marubutan suna jayayya cewa bi da su daban ba shi da inganci kuma suna ba da shawarar tsarin gyara gabaɗaya.

3. Hanyoyin Aiki: Tsarin Aiki Mai Matakai Biyar

Binciken ya gabatar da tsari, tsarin aiki mai matakai biyar don ƙira da gyara tasirin gabaɗaya.

3.1 Ƙididdige Kusurwar Rarrabuwa & Karkatar da Tsakiya

An gabatar da hanyar ƙididdige kusurwar rarrabuwar katakon laser. Wannan siga yana da mahimmanci don fahimtar girman ƙafar. Ana amfani da hanyar "karkatar da tsakiya" don rage tasirin pixels guda ta hanyar canza wurin ma'auni mai tasiri ta hanyar lissafi.

3.2 Ƙirar Tasirin Kusurwar Faɗuwa

An tsara samfurin zahiri-geometric don ƙididdige kuskuren aunawa a matsayin aiki na kusurwar faɗuwa, lalacewar ƙafar, da kaddarorin saman.

3.3 Ƙididdige Kusurwar Faɗuwa da ba a sani ba ta hanyar Maimaitawa

Wani sabon abu mai mahimmanci don aikin filin aiki na zahiri. Tunda ainihin kusurwar faɗuwa a manufa sau da yawa ba a sani ba, marubutan sun ƙirƙiri tsarin maimaitawa wanda ke amfani da farkon abubuwan lura don ƙididdige mafi kyawun kusurwar faɗuwa, yana mayar da shi cikin samfurin gyara.

3.4 Ƙididdige Sigogi ta hanyar Daidaitawa

Duk sigogin samfurin (misali, kusurwar rarrabuwa, ƙididdiga na samfurin) ana ƙididdige su ta amfani da dabarun daidaitawa (kamar mafi ƙanƙanta murabba'ai) waɗanda ke ƙididdige duk rashin tabbas na lura, yana tabbatar da sakamako mai ƙarfi a ƙididdiga.

3.5 Tsarin Gyaran Karkata Guda ɗaya

An haɗa samfuran guda ɗaya daga matakai na 3.1 da 3.2 zuwa cikin ma'auni guda ɗaya, cikakken ma'auni na gyara. Wannan samfurin na ƙarshe yana fitar da karkataccen kewayon ($\Delta D_{corr}$) wanda dole ne a yi amfani da shi akan ma'aunin danye.

4. Cikakkun Bayanai na Fasaha & Tsarin Lissafi

Babban samfurin gyara yana haɗa abubuwan geometric da na sigina. Ana iya bayyana sauƙaƙan wakilcin karkata guda ɗaya kamar haka:

$\Delta D_{corr} = f(\theta, \phi, \Delta R_{res}, I(t)) + \epsilon$

Inda:

• $\theta$: Kusurwar faɗuwar katakon laser.
• $\phi$: Kusurwar rarrabuwar katako.
• $\Delta R_{res}$: Ƙudurin kewayon kayan aikin.
• $I(t)$: Tsarin lokaci-ƙarfi na bugun jini na dawowa.
• $\epsilon$: Ragowar daidaitawa waɗanda ke ƙididdige hayaniyar lura.

5. Sakamakon Gwaji & Tabbatarwa

5.1 Saitin Gwaji & Kayan Aiki

An gudanar da gwaje-gwaje ta amfani da tashoshi biyu na kasuwanci: Trimble M3 DR 2" da Topcon GPT-3002LN. An sanya manufa don ƙirƙirar yanayi masu sarrafawa waɗanda ke haifar da pixels guda (misali, a gefunan matakai) da kusurwoyin faɗuwa daban-daban.

5.2 Sakamako akan Trimble M3 DR 2" da Topcon GPT-3002LN

An yi amfani da tsarin aikin gyara da aka gabatar akan bayanai daga kayan aikin biyu. Sakamakon ya tabbatar da tasirinsa:

• Rage Kuskuren Tsari: An rage tasirin son rai da aka haifar da duka pixels guda da tasirin kusurwar faɗuwa.
• Kiyaye Ingancin Aunawa: An kiyaye daidaiton (maimaitawa) ma'aunai ko kuma an inganta su bayan gyara.
• Hanyar Gabaɗaya ta Kayan Aiki: Duk da yawa girman kurakurai ya bambanta tsakanin samfuran Trimble da Topcon saboda sarrafa siginar mallakar mallaka, an yi amfani da tsarin ƙira iri ɗaya cikin nasara, yana nuna yadda za a iya amfani da shi gabaɗaya.

5.3 Bayanin Chati da Zane

Hoto na 1 (An ambata a cikin PDF): Yana kwatanta tasirin pixels guda. (a) Lokacin da katsewar zurfin ya yi ƙasa da ƙudurin kewayon, bugun jini guda ɗaya mai lalacewa yana yaudarar kayan aikin. (b) Lokacin da bambancin zurfin ya fi girma, bugun jini da yawa yana ba da damar kayan aikin ya bambanta tsakanin saman.

Hoto na 2 (An ambata a cikin PDF): Yana kwatanta yanayin aikin filin gama gari inda wurin manufa (misali, akan rufin gangare ko a kusurwar gini) yana ƙarƙashin tasirin pixels guda da aka haɗa, yana haɗa duka rarrabuwar ƙafar da tsawaita saboda faɗuwar karkata.

Chatunan Sakamako da aka nuna: Binciken yana iya haɗawa da chatunan da ke nuna ƙimar kewayon danye da aka gyara da aka tsara akan nesa da aka sani ko kusurwoyin faɗuwa, yana nuna haɗuwar bayanan da aka gyara zuwa layin gaskiya.

6. Tsarin Bincike: Misalin Lamari

Yanayi: Auna nesa zuwa wani batu a bangon tsaye tare da kayan aikin matakin ƙasa. Ƙafar laser ta bugi duka bango (manufa ta farko) da ƙasa da ke kusa.

Aikace-aikacen Tsarin:

1. Gano Lamari: Wannan misali ne bayyananne na Tasirin Pixels Guda da aka Haɗa (pixel guda daga bango/ƙasa + tasirin kusurwar faɗuwa akan bango).
2. Shigar da Bayanai: Nesa da aka auna danye, kusurwar rarrabuwar kayan aikin da aka sani da faɗin bugun jini (don $\Delta R_{res}$), kusan wurin kayan aiki da manufa don hasashen kusurwar faɗuwa na farko.
3. Gudanar da Tsarin Aiki:
   • A yi amfani da samfurin karkatar da tsakiya don yin la'akari da dawowar ƙasa a cikin ƙafar.
   • A yi amfani da hasashen farko don kusurwar faɗuwar bango a cikin samfurin tasirin kusurwar faɗuwa.
   • A gudanar da tsarin maimaitawa: a gyara kewayon, a yi amfani da sabon kewayon don sake ƙididdige kusurwar faɗuwa mafi daidai (bisa geometry), kuma a maimaita har sai an haɗu.
   • Tsarin daidaitawa yana inganta duk sigogin samfurin ta amfani da wannan da sauran wuraren lura.
4. Fitowa: Ƙimar kewayon da aka gyara wacce ke nuna nesa zuwa wurin da aka yi niyya akan bango daidai, ba tare da kuskuren tsari da aka haɗa ba.

7. Hasashen Aikace-aikace & Hanyoyin Gaba

Aikace-aikace na Nan take:

• Bincike Mai Madaidaici & Injiniya: Yana da mahimmanci don sa ido kan lalacewar tsarin, tabbatar da ginin, da binciken kadastral inda ma'aunai sau da yawa suka haɗa da gefuna da saman karkata.
• Daidaita LiDAR na Motoci Masu Cin Gashin kansu: Gyara kurakuran aunawa a iyakokin abu (misali, gefuna, sauran motoci) yana da mahimmanci don fahimta da gano wuri daidai.
• Takaddun Gado & Binciken Forensic: Yana ba da damar yin sikanin 3D mafi daidai na cikakkun bayanan gine-gine da yanayin haɗari.

Hanyoyin Bincike na Gaba:

• Haɗawa da LiDAR na Tsarin Lokaci: Ana iya inganta samfurin kai tsaye ta amfani da cikakkun bayanan tsarin lokaci ($I(t)$) maimakon dawowa daban-daban, yana ba da damar rarraba siginar guda da aka haɗa da madaidaici, kama da ci-gaba na bincike na cikakken tsarin lokaci a cikin LiDAR na yanayin ƙasa (misali, Mallet & Bretar, 2009).
• Ƙididdige Sigogi Tare da AI: Ana iya amfani da koyon inji don koyon sigogin samfurin na musamman na kayan aiki ko rarraba nau'in yanayin pixel guda, yana inganta dabarun gyara.
• Gyare-gyaren Module na Lokaci-lokaci: Aiwatar da algorithm na maimaitawa a matsayin firmware da aka saka ko software na sarrafa bayanai don tashoshi gabaɗaya na kasuwanci da na'urorin sikanin laser.
• Ƙaddamarwa zuwa Saman da ba na Lambertian ba: Haɗa ƙarin rikitattun samfuran Aikin Rarraba Haske Biyu (BRDF) don saman kamar ƙarfe ko gilashi.

8. Nassoshi

1. Abshire, J. B., et al. (1994). Masu ƙididdige lokacin bugun jini na laser. Applied Optics.
2. Adams, M. D. (1993). Fasahar Mai Auna Nesa na Laser.
3. Herbert, M., & Krotkov, E. (1992). Ma'aunai na 3D daga radar na laser na hoto. Image and Vision Computing.
4. Mallet, C., & Bretar, F. (2009). Cikakken tsarin lokaci na lidar na yanayin ƙasa: Fasaha mafi kyau. ISPRS Journal of Photogrammetry and Remote Sensing, 64(1), 1-16.
5. Soudarissanane, S., et al. (2009). Tasirin kusurwar faɗuwa akan ingancin wuraren sikanin laser na ƙasa. ISPRS Workshop.
6. Typiak, A. (2008). Hanyoyin kawar da al'amarin pixel guda a cikin masu auna nesa na laser. Metrology and Measurement Systems.
7. Xiang, L., & Zhang, Y. (2001). Bincike na pixel guda a cikin mai auna nesa na laser. Proceedings of SPIE.
8. Zhu, J., et al. (2017). Fassarar hoto-zuwa-hoto mara biyu ta amfani da cibiyoyin adawa masu daidaitaccen zagaye. Proceedings of the IEEE International Conference on Computer Vision (ICCV). (Nassin CycleGAN don kwatanta canjin yanki).

9. Bincike na Asali & Sharhin Kwararru