是否可以在图像和星座之间进行相关？ [英] Is it possible to make a correlation between an image and a constellation?
问题描述
我要做的是在手机拍摄的图像和星座之间创建关系。让我们假设我已经给出了来自NASA的每个星座的整个坐标，并且我可以将一些指定的对象识别为图像上的坐标点。如何在这些不同的坐标之间建立一个关系？如何在图像和任何星座之间指向几何相似？什么样的算法可以帮助这种情况？
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我想你会更好
轮廓图像和星座恒星不像你想象的那么相似。不知道你想要使用什么样的手机，但人眼和照片上的星星是不一样的。由于户外条件（云，湿气，温度，灰尘，光污染），因为不同的光线敏感度，所以经常会看到许多星星。
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因此要为每个星座创建星星列表
您将需要位置，颜色，量级
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比较
检测照片中的所有/并按亮度递减排序。与每个星座（也排序）存储的数据相关，并选择具有足够高相似度的星座。如果你想要更多的不变数据旋转，缩放然后比较明亮的星星之间的距离，而不是位置
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现在你知道星座 / p>
为此添加图片...
strong> [notes]
这里有一些相关链接：
- 。上述星座只是连接来自 BSC 的恒星的多线形成图像。有许多星座表示，所以如果你不喜欢一些重写他们的你的喜好。
neni cele !!!注释表示未完成。What I'm trying to do is to create a relation between an image which has been taken by a mobile phone and a constellation. Let's suppose I've been given the whole coordinates of each constellations from NASA and I can recognize some specified objects as coordinate points on the image. How can I make a relation between those different coordinates? How can I point geometrical similarities between image and any constellation? What kind of an algorithm could help the situation?
解决方案I think you would be better of with comparing star position,brightness,color
The outline image and constellation stars are not that similar as you think. Don't know what kind of phone you want to use but the stars visible by human eye and on the photo will not be the same. You will have to consider the loss of data due to different light sensitivity, due to outdoor conditions (clouds,moisture,temperature,dust,light polution) so often many stars will not be visible on the photo
so create list of stars per each constellation
you will need position,color (BV index),magnitude
comparison
detect all/bright stars from photo and sort them by brightness descending. Correlate with stored data per each constellation (also sorted) and choose constellation with high enough similarity. If you want more invariant data on rotation,scale then compare distances between bright stars instead of positions
now you know the constellation
so add image for it ...
[notes]
here some related links:
- correlation coefficient
- BV to RGB conversion
- can use atmospheric scattering to make the BV color more realistic
this is real (with marked the stars)
and rendered image for comparison
real image was taken by camera and tripod. You can often expect missing few stars from constellation according to visual conditions. On phones it is usually much much worse.
Here mine Constellations data I created a decade ago ...
// constellations (-2 means MoveTo, >=0 means LineTo BSC star ID) sadd("Ursa minor" ,420,6777,6311,5893,5553,5725,6106,5893); sadd("Andromeda" ,14,333,600,333,265,222); sadd("Triangulum" ,540,660,618,540); sadd("Camelopardalis" ,1537,1598); //neni cele !!! sadd("Cassiopeia" ,538,399,260,165,20); sadd("Perseus" ,1198,1215,1117,1013,911,1013,932,875,917,943,932); sadd("Auriga" ,2089,2082,1703,1600,1587,1572,-2,1636,1600,1607); sadd("Lynx" ,3695,3680,3570,3267); sadd("Leo minor" ,4090,4237); //neni cele !!! sadd("Ursa major" ,5181,5045,4895,4650,4291,4285,4544,4650,4291,3747,3315,-2,4285,3765,3560,3765,3585,-2,4544,4508,4325,4059,4325,4023); sadd("Canes venatici" ,4905,4775); //neni cele !!! sadd("Hercules" ,6683,6474,6407,6313,6202,6210,6407,6210,6158,6082,6013,5972,-2,6085,6138,6202,6313,6399,6514,6611,6691,6767); sadd("Draco" ,6676,6693,6524,6543,6676,7297,7568,6915,6385,6122,5976,5734,5281,4777,4424); sadd("Lyra" ,6989,7044,7127,7166,7094,7044); sadd("Cygnus" ,7405,7465,7601,7782,7910,-2,8101,7935,7782,7515,7407,7315); sadd("Cepheus" ,7836,7943,8148,8556,8450,-2,8479,8556,8679,8959,8679,8224,8148); sadd("Lacerta" ,8598,8570,8523,8570,8526,8557,8508,8564,8470,8483,-2,8564,8617,8557); sadd("Cetus" ,184,330,73,330,398,535,505,581,-2,535,677,735,775,800,907,800,750,714,809,892); sadd("Pisces" ,348,379,356,347,433,506,592,545,485,430,290,220,9057,8954,8901,8863,8758,8837,8896,8969,8954,8969,9052,2); sadd("Eridanus" ,1661,1515,1458,1320,1476,1491,-2,1320,1293,1226,1131,1079,984,870,915,999,1083,1168,1235,1459,1388,1342,1185,894,790,717,670,562,468); sadd("Fornax" ,959,837); //neni cele !!! sadd("Columba" ,2290,2100,2034,1950,1856); sadd("Taurus" ,2089,1404,1384,1368,1341,1234,1341,1407,1452,1651,1904,-2,1452,1404,1251,1160); sadd("Lepus" ,2029,1859,1697,1751,-2,1700,1697,1649,1824,1859,1977); sadd("Orion" ,1943,1897,1846,1730,1708,1998,1943,2055,1870,1785,1846); sadd("Canis major" ,2649,2588,2484,2288,2484,2645,2685,2638,2610,2276,-2,2819,2758,2685); sadd("Gemini" ,2982,2965,2883,2844,2689,2466,2280,2337,2415,2642,2769,2977,2982); sadd("Monoceros" ,3180,2962,2706,2350,2221,-2,2706,2498,2293); sadd("Cancer" ,3467,3441,3453,3563,3453,3311,3241); sadd("Canis minor" ,2935,2837); //neni cele !!! sadd("Hydra" ,3538,3474,3402,3410,3446,3538,3656,3777,3738,3893,3960,3984,4084,4222,4307,4440,4542,4948,5010,5070,5277,-2,3738,3699,3632,3451,3306,3451,3476); sadd("Pyxis" ,3430,3460,3509); sadd("Sextans" ,4183,3971,3899); //neni cele !!! sadd("Antlia" ,4094,4094); //neni cele !!! sadd("Virgo" ,4507,4530,4679,4816,4900,4922,-2,4816,4953,5046,4953,5097); sadd("Corvus" ,4776,4620,4652,4747,4776); sadd("Crater" ,4395,4372,4277,4333,4395); sadd("Bootes" ,5225,5330,5496,5671,5592,5425,5419,5330); sadd("Corona borealis" ,5937,5879,5839,5783,5737,5768); sadd("Libra" ,5593,5521,5675,5777); sadd("Serpens caput" ,5923,5857,5869,5857,5779,5844,5882,6046,6065,6165,6367,6442); sadd("Serpens cauda" ,6367,6549,6686,6722,6857,7130); sadd("Ophiuchus" ,6686,6617,6591,6544,6396,6289,6139,6046); sadd("Scorpius" ,6515,6568,6603,6546,6369,6261,6237,6231,6155,6124,6074,5934,-2,5943,6074,5975); sadd("Scutum" ,6961,7051); sadd("Sagittarius" ,6800,6901,7027,7109,7204,7251,7204,7138,-2,7181,7221,7109,-2,6901,6847,6734,6847,6867,6820); sadd("Vulpecula" ,7392,7643); sadd("Sagitta" ,7475,7523,7466,7523,7621); sadd("Delphinus" ,7838,7868,7914,7934,7892,7868); sadd("Aquila" ,7512,7543,7222,7364,7556,7696,7588,7543,7364,7223); sadd("Capricrnus" ,7740,7762,7808,7922,7966,8066,8190,8199,8246,8307,8264,8153,8061,7762); sadd("Piscis austrinus" ,8613,8713,8705,8680,8561); sadd("Pegasus" ,8635,8760,8766,8650,8619,8435,8293,8619,-2,8300,8415,8652,8669,8760,14,38,8766); sadd("Equuleus" ,8117,8109,8083); sadd("Aquarius" ,7936,8218,8399,8503,8544,8582,8683,8664,8694,8797); sadd("Hydrus" ,587,1203,95); sadd("Phoenix" ,96,318,436,425,96); sadd("Reticulum" ,1331,1350,1242,1170,1331); sadd("Dorado" ,1916,1460,1333); sadd("Pictor" ,2542,2036,2014); sadd("Volans" ,3606,3339,2795,2728,3016); sadd("Carina" ,2320,3299,3689,3881,3675,4027,4189,4130,4040,3689); sadd("Puppis" ,3177,3094,3037,2941,2779,2765,3157,2870,2545,2445,2765); sadd("Vela" ,3625,3199,3477,3724,3625,3477,-2,3724,3793); sadd("Chamaeleon" ,3310,4164,4224); sadd("Musca" ,4510,4661,4788,4763,4913,4834,4788); sadd("Crux" ,4843,4646,-2,4753,4721); sadd("Centaurus" ,4611,4809,5122,5257,5449,-2,5122,5221,5183,5180,5018,-2,5180,5278,5430,5566); sadd("Circinus" ,5660,5453,5694); sadd("Triangulum Australe",6207,5661,5761,5887,6207); sadd("Lupus" ,5938,5766,5685,5695,-2,5459,5561,5685,5766,5698,5639); sadd("Norma" ,6062,6105); sadd("Ara" ,6499,6450,6275,6285,-2,6219,6275,6450,6451,6489); sadd("Telescopium" ,6893,6885); sadd("Corona Australis" ,7140,7214,7241,7246,7229,7176); sadd("Apus" ,5460,6011,6092,6153); sadd("Octans" ,5329,8615,8240); sadd("Tucana" ,124,8833,8487); sadd("Grus" ,8660,8621,8541,8410,-2,8541,8471,8396,8338); sadd("Pavo" ,7776,7899,7651,7062,6570,6970,7576,7899); sadd("Indus" ,7776,7972,7906,7855);As your star database you can easily use BSC (Yale Bright Stars Catalog). Constellations above are just poly-lines connecting stars from BSC to form the image. There are many constellation representations so if you do not like some rewrite them to your liking.
neni cele !!!comment means it is unfinished.这篇关于是否可以在图像和星座之间进行相关？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
