Torch Lua Camera Demo

camera_demo.lua

require 'torch'
require 'image'
require 'camera'

require 'qt'

local function main()
  local camera_opt = {
    idx = 0,
    fps = 30,
    height = 480,
    width = 640,
  }
  local cam = image.Camera(camera_opt)

  local win = nil
	local idx = 1
	
  while true do
    -- Grab a frame from the webcam
    local img = cam:forward():clamp(0,255)

		idx = idx + 1
    if not win then
      -- On the first call use image.display to construct a window
      win = image.display(img)
    else
      -- Reuse the same window
      win.image = img
      local size = win.window.size:totable()
      local qt_img = qt.QImage.fromTensor(img)
      win.painter:image(0, 0, size.width, size.height, qt_img)
    end
  end
end

main()