huanglin 发表于 2004-3-22 18:49:00

有人用ASAP进行过仿真拍照吗?



希望提供点指点!谢谢!



redflag 发表于 2004-3-25 21:01:00

原图像

redflag 发表于 2004-3-25 21:02:00

200000条光线

redflag 发表于 2004-3-25 21:04:00

<P>为什么我的图片贴不上去呢?</P>

redflag 发表于 2004-3-25 23:36:00

<img src="data/attachment/forum/dvbbs/2004-3/200432515364524.bmp" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'data/attachment/forum/dvbbs/2004-3/200432515364524.bmp\');}" onmousewheel="return imgzoom(this);" alt="" />原图像

redflag 发表于 2004-3-25 23:39:00

<img src="data/attachment/forum/dvbbs/2004-3/2004325153917926.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'data/attachment/forum/dvbbs/2004-3/2004325153917926.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />20000条光线

seanhwong 发表于 2004-3-26 05:27:00



我以前试过，但发觉不是很好用。以照明系统来看，要看到比较均匀的像，至少要10,000,000的rays。
<p>真的用他来成像，RGB三色又要多出3倍时间，我想是很不划算的。若再加上ghost分析，可能只会无谓的消耗你的时间。若真的想做，你可以在他的example里找到（project\BMPSourceTrace），稍加修改放入你的系统就可以，语法不难。<p><p>不过，我真的觉得拿他来作杂光分析还是比较有价值的



seanhwong 发表于 2004-3-26 05:46:00



Hi Huanglin
我用P4 2.4G 双CPU，Ram 1,000,000执行单一色所耗费的时间
15.03 seconds ( 13.14 seconds CPU) to trace 400,000 out of 1,381,615
28.69 seconds ( 26.42 seconds CPU) to trace 800,000 out of 1,763,231
81.55 seconds ( 78.16 seconds CPU) to trace 1,200,000 out of 1,954,030
3.06 minutes ( 2.80 minutes CPU) to trace 1,600,000of 4.53 minutes ( 4.14 minutes CPU) to trace 1,954,030
真实时间至少 x3
以范例133X160的图当光源
但是若把图文件分辨率变大
ray的数目变多
可能会run很久


<p>
参考看看
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<img src="data/attachment/forum/dvbbs/2004-3/200432521569977.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'data/attachment/forum/dvbbs/2004-3/200432521569977.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
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[此贴子已经被作者于2004-3-25 23:25:08编辑过]



huanglin 发表于 2004-3-26 15:47:00



图片这么那么暗啊，看也看不清，这是什么缘故？



seanhwong 发表于 2004-3-27 02:31:00



我觉得是光线数不够，但多少才够，一直是个疑问。



huanglin 发表于 2004-3-27 08:15:00

<P>多谢!</P>
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