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< > BotCompany Repo | #404 - Magic Wand + Hashes (column range, improving)

Lua code - Image recognition

get("#349") -- table functions
get("#380") -- hashImage
get("#121") -- compareTables
get("#348") -- bright and rgb

maxSize = {width=100, height=50}
minSize = {width=4, height=4}
threshold = 0.5
wandSize = 3 -- magic wand size

col1 = col1 or 10
col2 = col2 or img.width-10

local rectangles, _img

function cloneRectangle(r)
  return newRectangle(r.x, r.y, r.width, r.height)
end

function newRectangle(x, y, w, h)
  return {x=x, y=y, width=w, height=h}
end

function contains(r, x, y)
  return x >= r.x and y >= r.y and x < r.x+r.width and y < r.y+r.width
end

function nextX(x, y)
  for r, _ in pairs(rectangles) do
    pTests = pTests+1
    if contains(r, x, y) then
      return r.x+r.width
    end
  end
  return nil
end

pDuplicate, pNew, pSeen, pNotSeen, pTests = 0, 0, 0, 0, 0

-- returns rectangle
function magicWand(image, x, y)
  if image ~= _img then
    _img, rectangles = image, {}
  end
  local nx = nextX(x, y)
  if nx ~= nil then
    pSeen = pSeen+1
    return nil, nx
  end
  pNotSeen = pNotSeen+1
  local r = newRectangle(x, y, wandSize, wandSize)
  
  while true do
    local last = cloneRectangle(r)
    expandLeft(image, r)
    if tooLarge(r) then return nil end
    expandTop(image, r)
    if tooLarge(r) then return nil end
    expandRight(image, r)
    if tooLarge(r) then return nil end
    expandBottom(image, r)
    if tooLarge(r) then return nil end    
    if compareTables(last, r) then
      if r.width >= minSize.width and r.height >= minSize.width then
        if rectangles[r] then
          pDuplicate = pDuplicate+1
        else
          pNew = pNew+1
          rectangles[r] = true
        end
        return r
      else
        return nil
      end
    end
  end
end

function tooLarge(r)
  return maxSize ~= nil and (r.width > maxSize.width or r.height > maxSize.height)
end

function expandLeft(image, r)
  local newX = math.max(r.x - wandSize, 0)
  if newX == r.x then return end
  newX = searchFromLeft(image, newRectangle(newX, r.y, r.x-newX, r.height))
  r.width = r.width+r.x-newX
  r.x = newX
end

function searchFromLeft(image, r)
  for x = r.x, r.x+r.width-1 do
    if regionNotEmpty(image, newRectangle(x, r.y, 1, r.height)) then
      return x
    end
  end
  return r.x+r.width
end

function expandRight(image, r)
  local newX = math.min(r.x + r.width + wandSize, image.width)
  if newX == r.x+r.width then return end
  newX = searchFromRight(image, newRectangle(r.x+r.width, r.y, newX-(r.x+r.width), r.height))
  r.width = newX-r.x
end

function searchFromRight(image, r)
  for x = r.x+r.width-1, r.x, -1 do
    if regionNotEmpty(image, newRectangle(x, r.y, 1, r.height)) then
      return x+1
    end
  end
  return r.x
end

function expandTop(image, r)
  local newY = math.max(r.y - wandSize, 0)
  if newY == r.y then return end
  newY = searchFromTop(image, newRectangle(r.x, newY, r.width, r.y-newY))
  r.height = r.height+r.y-newY
  r.y = newY
end

function searchFromTop(image, r)
  for y = r.y, r.y+r.height-1 do
    if regionNotEmpty(image, newRectangle(r.x, y, r.width, 1)) then
      return y
    end
  end
  return r.y+r.height
end

function expandBottom(image, r)
  local newY = math.min(r.y + r.height + wandSize, image.height)
  if newY == r.y+r.height then return end
  newY = searchFromBottom(image, newRectangle(r.x, r.y + r.height, r.width, newY-(r.y+r.height)))
  r.height = newY-r.y
end

function searchFromBottom(image, r)
  for y = r.y+r.height-1, r.y, -1 do
    if regionNotEmpty(image, newRectangle(r.x, y, r.width, 1)) then
      return y+1
    end
  end
  return r.y
end

-- we're looking for dark pixels this time
function regionNotEmpty(image, r)
  --return image.clip(rectangle).anyPixelBrighterThan(threshold)
  for y=r.y, r.y+r.height-1 do
    for x=r.x, r.x+r.width-1 do
      if bright(rgb(image.getInt(x, y))) < threshold then
        return true
      end
    end
  end
  return false
end


function recttostring(r)
  return r.x..", "..r.y..", "..r.x+r.width..", "..r.y+r.height
end

function magicWandColumnRange(image, col1, col2)
  local allrects = {}

  for y = 0, image.height-1, 2 do
    for x = col1, col2, 2 do
      local r = magicWand(image, x, y)
      if r then
        allrects[recttostring(r)] = true
      end
    end
  end
  
  return allrects
end

allrects = magicWandColumnRange(img, col1, col2)

function stringtorect(s)
  local _, _, x1, y1, x2, y2 = string.find(s, "(%d+),%s*(%d+),%s*(%d+),%s*(%d+)")
  x1, y1, x2, y2 = tonumber(x1), tonumber(y1), tonumber(x2), tonumber(y2)
  return newRectangle(x1, y1, x2-x1, y2-y1)
end

result = {}
for s, _ in pairs(allrects) do
  r = stringtorect(s)
  cropped = {width=r.width, height=r.height,
    getInt = function(x, y) return img.getInt(x+r.x, y+r.y) end}
  hash = hashImage(cropped)
  table.insert(result, s.." -> "..hash)
end
result = table.concat(result, "|")
if result ~= '' then
  return "Magic Wand + hashes (wand size="..wandSize..", columns="..col1.."-"..col2.."): "..result
end

Author comment

Began life as a copy of #403

download  show line numbers   

Travelled to 8 computer(s): aoiabmzegqzx, cbybwowwnfue, gwrvuhgaqvyk, ishqpsrjomds, lpdgvwnxivlt, mqqgnosmbjvj, tslmcundralx, tvejysmllsmz

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Image recognition results [IR DISABLED]

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Image Result Result calculated
#1000119 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 102919 2016-08-08 03:40:57

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#1000121 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 102919 2016-08-05 06:20:34

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#1000199 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-08-04 19:21:34

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#1000113 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-08-04 19:18:27

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#1000146 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-08-04 05:15:26

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#1000015 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 3455 2016-08-03 17:25:43

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#1000072 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 12987 2016-08-03 01:34:12

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#1000207 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 41623 2016-08-01 08:10:20

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#488 java.io.IOException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operat... 2016-08-01 07:29:05

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#489 java.io.IOException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operat... 2016-08-01 07:29:05

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#1000219 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-08-01 07:23:38

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#1000221 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-08-01 07:21:44

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#1000217 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 135427 2016-08-01 07:20:03

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#1000209 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 422627 2016-08-01 07:19:11

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#1000210 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-08-01 07:06:26

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#1000220 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 50183 2016-08-01 07:04:47

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#1000198 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 360007 2016-08-01 06:39:07

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#1000197 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-08-01 06:37:39

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#1000196 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-08-01 06:36:01

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#1000203 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 176407 2016-08-01 06:33:13

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#1000201 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 90007 2016-08-01 06:31:12

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#1000208 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 147463 2016-08-01 06:30:36

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#1000211 Magic Wand + hashes (wand size=3, columns=10-210): 96, 16, 100, 26 -> 000895a3|98, 14, 116, 26 -> 00... 2016-08-01 06:29:49
Lua instructions: 162895k

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#1000213 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 147463 2016-08-01 06:29:33

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#1000214 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-08-01 06:28:41

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#1000212 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-08-01 06:27:02

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#1000216 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-08-01 06:25:11

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#1000218 java.lang.OutOfMemoryError: Java heap space 2016-08-01 06:23:20

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#1000195 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-08-01 04:29:14

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#1000194 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-08-01 04:13:06

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#1000189 Magic Wand + hashes (wand size=3, columns=10-439): 0, 0, 17, 7 -> 001f6e5f|20, 0, 37, 15 -> 001e1943... 2016-08-01 03:32:16
Lua instructions: 315965k

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#1000187 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-08-01 03:07:59

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#1000186 Magic Wand + hashes (wand size=3, columns=10-98): 0, 1, 53, 13 -> 00a1fcf6|54, 0, 108, 12 -> 0094886... 2016-08-01 03:04:16
Lua instructions: 376k

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#1000185 Magic Wand + hashes (wand size=3, columns=10-38): 0, 0, 48, 10 -> 00c0f049 2016-08-01 03:04:14
Lua instructions: 52k

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#1000184 Magic Wand + hashes (wand size=3, columns=10-38): 0, 0, 48, 13 -> 00030a6d 2016-08-01 02:54:47
Lua instructions: 61k

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#1000183 Magic Wand + hashes (wand size=3, columns=10-35): 0, 0, 45, 12 -> 004aea5a 2016-08-01 02:54:47
Lua instructions: 55k

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#1000182 Magic Wand + hashes (wand size=3, columns=10-53): 0, 0, 63, 12 -> 00d3e46d 2016-08-01 02:54:43
Lua instructions: 73k

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#1000181 Magic Wand + hashes (wand size=3, columns=10-40): 0, 0, 50, 10 -> 00adb081 2016-08-01 02:54:26
Lua instructions: 55k

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#1000180 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 42007 2016-08-01 02:54:12

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#1000179 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-08-01 02:52:46

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#1000178 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-08-01 02:36:57

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#1000177 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 55007 2016-08-01 02:20:41

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#1000176 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-08-01 02:17:09

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#1000175 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 143863 2016-08-01 02:02:40

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#1000172 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 37345 2016-08-01 01:55:56

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#1000173 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 37345 2016-08-01 01:55:31

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#1000171 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 30443 2016-08-01 01:48:32

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#1000170 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-08-01 01:46:03

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#1000169 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 61497 2016-08-01 01:26:27

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#1000168 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 4107 2016-08-01 01:16:00

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#1000167 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 25496 2016-08-01 01:09:25

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#1000166 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 25496 2016-08-01 01:07:49

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#1000164 Magic Wand + hashes (wand size=3, columns=10-49): 0, 0, 59, 21 -> 01d477b6 2016-08-01 01:04:01
Lua instructions: 99k

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#1000163 Magic Wand + hashes (wand size=3, columns=10-332): 210, 56, 242, 63 -> 004887d6|213, 56, 245, 63 -> ... 2016-07-31 23:39:52
Lua instructions: 46552k

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#1000162 java.io.IOException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operat... 2016-07-31 23:21:17

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#1000161 Magic Wand + hashes (wand size=3, columns=10-71): 11, 36, 23, 46 -> 000806c8|42, 36, 53, 47 -> 0028e... 2016-07-31 23:19:12
Lua instructions: 29682k

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#1000160 Magic Wand + hashes (wand size=3, columns=10-71): 8, 665, 13, 681 -> 001b8124|11, 36, 23, 46 -> 0020... 2016-07-31 23:17:02
Lua instructions: 157854k

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#1000158 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 3187 2016-07-31 23:11:59

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#1000157 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-07-31 23:00:11

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#1000156 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 61292 2016-07-31 22:38:08

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#1000149 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 85125 2016-07-31 22:34:18

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#1000150 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 137877 2016-07-31 22:33:53

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#1000151 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 91447 2016-07-31 22:33:22

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#1000154 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 141348 2016-07-31 22:32:37

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#1000155 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 96019 2016-07-31 22:31:57

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#1000152 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 137877 2016-07-31 22:26:38

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#1000153 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 91447 2016-07-31 22:26:07

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#1000148 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 83113 2016-07-31 22:16:23

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#1000147 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 41299 2016-07-31 22:12:04

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#1000144 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-07-31 21:57:25

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#1000145 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-07-31 21:55:10

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#1000143 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-07-31 21:33:48

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#1000142 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-07-31 21:22:53

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#1000137 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 419217 2016-07-31 21:07:52

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#1000139 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 419217 2016-07-31 21:06:56

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#1000140 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-07-31 21:05:32

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#1000138 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 419217 2016-07-31 21:03:31

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#1000141 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-07-31 21:02:33

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#1000136 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 379721 2016-07-31 20:50:35

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#1000132 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-07-31 20:43:29

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#1000131 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-07-31 20:32:57

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#1000130 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-07-31 20:25:30

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#1000127 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-07-31 20:21:08

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#1000126 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 261415 2016-07-31 20:13:57

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#1000125 Magic Wand + hashes (wand size=3, columns=10-331): 41, 270, 53, 282 -> 003290b8|232, 272, 241, 277 -... 2016-07-31 20:10:47
Lua instructions: 393801k

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#1000124 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-07-31 20:07:58

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#1000123 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 156387 2016-07-31 20:03:48

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#1000122 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 102919 2016-07-31 20:02:41

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#419 java.io.IOException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operat... 2016-07-31 20:02:18

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#1000120 Magic Wand + hashes (wand size=3, columns=10-71): 0, 0, 81, 11 -> 01254317|0, 0, 47, 11 -> 00cfc842 2016-07-31 20:01:25
Lua instructions: 132k

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#1000118 LuaError: #404:154 vm error: java.lang.ArrayIndexOutOfBoundsException: 102919 2016-07-31 20:00:55

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#1000114 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-07-31 19:58:15

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#1000116 LuaError: LuaTimeOutSandbox.loader:17 timeout <1000000k> 2016-07-31 19:56:33

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#1000112 LuaError: #404:2 vm error: java.io.IOException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientCon... 2016-07-31 19:50:12

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#1000038 LuaError: #404:2 vm error: java.io.IOException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientCon... 2016-07-31 19:50:11

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#1000020 LuaError: #404:2 vm error: java.io.IOException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientCon... 2016-07-31 19:50:11

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#1000035 java.io.IOException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operat... 2016-07-31 19:50:11

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#1000019 LuaError: #404:2 vm error: java.io.IOException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientCon... 2016-07-31 19:50:11

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#1000034 java.io.IOException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operat... 2016-07-31 19:50:10

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#1000024 LuaError: #404:2 vm error: java.io.IOException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientCon... 2016-07-31 19:50:10

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#100 java.io.IOException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operat... 2016-07-31 19:50:10

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#1000013 java.io.IOException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operat... 2016-07-31 19:50:10

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#309 java.io.IOException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operat... 2016-07-31 19:50:10

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#112 java.io.IOException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operat... 2016-07-31 19:50:10

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#1000003 java.io.IOException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operat... 2016-07-31 19:50:10

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#1000021 LuaError: #404:2 vm error: java.io.IOException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientCon... 2016-07-31 19:50:10

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#141 java.io.IOException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operat... 2016-07-31 19:50:09

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Snippet ID: #404
Snippet name: Magic Wand + Hashes (column range, improving)
Eternal ID of this version: #404/1
Text MD5: bc1710d8fbf381e6aeec05a5bede652d
Author: stefan
Category: image recognition
Type: Lua code - Image recognition
Public (visible to everyone): Yes
Archived (hidden from active list): No
Created/modified: 2015-03-06 20:43:51
Source code size: 5143 bytes / 201 lines
Pitched / IR pitched: No / Yes
Views / Downloads: 1572 / 90
Referenced in: [show references]

Formerly at http://tinybrain.de/404 & http://404.tinybrain.de