Sunflower Droste

Posted by barnoid Mon, 29 Sep 2008 13:11:02 GMT

Sunflower Droste
Droste Effect Sunflower. Created with the Mathmap GIMP plugin and the Droste script by Josh Sommers. How it’s done: Starting with a sunflower photo with a nice plain sky background I used the select by colour tool to select the background. Then by promoting the background layer to a proper layer I cut out the sky to leave the sunflower on the transparent checkerboard. On the first go with Mathmap I found the petals still had bright edges because they used to be against a bright sky, which looked wrong against the dark flower centre. So I went back so the selection stage, grew the selection by 3 pixels so it cut off the edges of the petals and then feathered it by 3 pixels. Then I cut the sky off. Now I had just the flower with gradual transparency around the edge. I grabbed a nice brown from the middle of the flower using the eyedropper and created a new layer under the flower layer filled with that colour. Then I flattened and again cut out the flower from the background using fuzzy select this time. Now at last I had a flower with a brown fringe around the edge. Finally I stuck it in Mathmap, selected Droste and turned on ExternalTransparency because that’s what it has. Tweaked the parameters and here is the result. Parameters: InnerRadius 29.56 OuterRadius 91 Periodicity 1.02 Strands 1 XCenterShift 2 YCenterShift -4 StartingLevel 5 ExternalTransparency on
MakeCanon
ModelCanon EOS 300D DIGITAL
Exposure0.008 sec (1/125)
Aperturef/9.0
ISO Speed100
Date and Time (Original)2006:09:05 15:07:40
Exposure Bias-2 EV
FlashNo Flash
Focal Length31 mm
QualityFine
Metering ModeEvaluative
Lens TypeUnknown (-1)

Sunflower Competition - day 94

Posted by barnoid Tue, 05 Sep 2006 14:38:01 GMT

Sunflower Competition - day 94
We have flowers! This is number two. 1: 221cm 2: 250cm 3: 249cm 5: 194cm I’m measuring from the ground to the highest point on the stem, where it bends over for the flower head. Two and three are very close, but three’s head is not fully formed yet so that may change.
MakeCanon
ModelCanon EOS 300D DIGITAL
Exposure0.003 sec (1/400)
Aperturef/16
ISO Speed1600
Date and Time (Original)2006:09:05 15:06:55
Exposure Bias-2 EV
Metering ModePattern
Focal Length43 mm

Sunflower Competition - day 84

Posted by barnoid Sat, 26 Aug 2006 10:39:22 GMT

Sunflower Competition - day 84
1: 205cm 2: 246cm 3: 232cm 5: 174cm
MakeCanon
ModelCanon EOS 300D DIGITAL
Exposure0.008 sec (1/125)
Aperturef/7.1
ISO Speed100
Date and Time (Original)2006:08:26 11:03:05
Exposure Bias0/3 EV
Metering ModePattern
Focal Length18 mm

Sunflower Competition - day 72

Posted by barnoid Mon, 14 Aug 2006 18:16:36 GMT

Sunflower Competition - day 72
1: 166cm 2: 210cm 3: 190cm 5: 137cm They’ve started growing flower heads, so probably won’t get much taller.
MakeCanon
ModelCanon EOS 300D DIGITAL
Exposure0.013 sec (1/80)
Aperturef/5.6
ISO Speed200
Date and Time (Original)2006:08:14 16:33:41
Exposure Bias0/3 EV
Metering ModePattern
Focal Length22 mm

Sunflower Competition - day 63

Posted by barnoid Sat, 05 Aug 2006 18:45:15 GMT

Sunflower Competition - day 63
1: 143cm 2: 179cm 3: 160cm 5: 116cm Been a while since the last update and they’ve kept growing apace. Number 2 is now taller than me and still no sign of a flower head.
MakeCanon
ModelCanon EOS 300D DIGITAL
Exposure0.02 sec (1/50)
Aperturef/4.5
ISO Speed200
Date and Time (Original)2006:08:05 19:39:10
Exposure Bias0/3 EV
Metering ModePattern
Focal Length22 mm

Sunflower Competition - day 44

Posted by barnoid Mon, 17 Jul 2006 14:02:26 GMT

Sunflower Competition - day 44
1: 94cm 2: 108cm 3: 96cm 5: 58cm
MakeCanon
ModelCanon EOS 300D DIGITAL
Exposure0.017 sec (1/60)
Aperturef/5.6
ISO Speed100
Date and Time (Original)2006:07:17 14:47:42
Exposure Bias0/3 EV
Metering ModePattern
Focal Length25 mm

Sunflower Competition - day 37

Posted by barnoid Mon, 10 Jul 2006 12:22:38 GMT

Sunflower Competition - day 37
1: 66cm 2: 76cm 3: 66cm 5: 43cm
MakeCanon
ModelCanon EOS 300D DIGITAL
Exposure0.017 sec (1/60)
Aperturef/6.3
ISO Speed200
Date and Time (Original)2006:07:10 13:00:50
Exposure Bias0/3 EV
Metering ModePattern
Focal Length27 mm

Sunflower Competition - day 30

Posted by barnoid Mon, 03 Jul 2006 11:50:20 GMT

Sunflower Competition - day 30
1: 44cm 2: 54cm 3: 43cm 5: 32cm
MakeCanon
ModelCanon EOS 300D DIGITAL
Exposure0.006 sec (1/160)
Aperturef/7.1
ISO Speed100
Date and Time (Original)2006:07:03 12:17:52
Exposure Bias0/3 EV
Metering ModePattern
Focal Length21 mm

Sunflower Competition - day 25

Posted by barnoid Wed, 28 Jun 2006 13:20:49 GMT

Sunflower Competition - day 25
1: 26cm 2: 32cm 3: 25cm 5: 22cm
MakeCanon
ModelCanon EOS 300D DIGITAL
Exposure0.005 sec (1/200)
Aperturef/8
ISO Speed200
Date and Time (Original)2006:06:28 13:39:54
Exposure Bias0/3 EV
Metering ModePattern
Focal Length21 mm

Sunflower Competition - day 16

Posted by barnoid Mon, 19 Jun 2006 17:16:50 GMT

Sunflower Competition - day 16
1: 10cm 2: 13cm 3: 9cm 4: n/a 5: 10.5cm 4 and 5 were eaten. Number 2 had a spare which was donated to 5. The culprits were identified as slugs and snails, so preventative measures have been taken. The clear plastic bottle guards were upgraded and spikes added to the tops, ash and crushed egg shells surround each plant and there is a milk/beer trap.
MakeCanon
ModelCanon EOS 300D DIGITAL
Exposure0.013 sec (1/80)
Aperturef/5.6
ISO Speed400
Date and Time (Original)2006:06:19 17:34:26
Exposure Bias0/3 EV
Metering ModePattern
Focal Length18 mm