Image (image)

image.image.is

image.is(value)

Check if a value is an image_buffer userdata.

image.image.load_data

image.load_data(data)

Load image from raw binary data (PNG/JPEG).

image.image.load_file

image.load_file(path)

Load image from file into image_buffer.

image.image.qr_encode

image.qr_encode(payload [, options])

Generate QR code image using nayuki/qrcodegen + CoreGraphics.

image.img:copy

img:copy()

Create a copy of the image.

image.img:crop

img:crop(x1, y1, x2, y2)

Crop image to region.

image.img:cv_binarization

img:cv_binarization([threshold])

Convert image to black and white (in-place). Grayscale then threshold.

image.img:cv_find_image

img:cv_find_image(needle)

Template match another image within this image using edge+gray NCC.

image.img:destroy

img:destroy()

Destroy image and free memory.

image.img:detect_barcodes

img:detect_barcodes([x1, y1, x2, y2 [, timeout_ms]])

Detect barcodes on image.

image.img:find_color

img:find_color(color_table [, similarity] [, x1, y1, x2, y2])

Search color pattern on image (same as screen.find_color but on image buffer).

image.img:get_color

img:get_color(x, y)

Get pixel color from image.

image.img:get_color_rgb

img:get_color_rgb(x, y)

Get pixel R,G,B from image.

image.img:height

img:height()

Get image height.

image.img:is_colors

img:is_colors(color_table [, similarity])

Check colors on image (same format as screen.is_colors).

image.img:jpeg_data

img:jpeg_data([quality])

Get raw JPEG binary data.

image.img:ocr_text

img:ocr_text([x1, y1, x2, y2])

OCR on image buffer.

image.img:png_data

img:png_data()

Get raw PNG binary data.

image.img:qr_decode

img:qr_decode([x1, y1, x2, y2 [, timeout_ms]])

Decode first QR/barcode from image.

image.img:save_to_album

img:save_to_album([timeout_ms])

Save image to photo album.

image.img:save_to_jpeg_file

img:save_to_jpeg_file(path [, quality])

Save image as JPEG file.

image.img:save_to_png_file

img:save_to_png_file(path)

Save image as PNG file.

image.img:size

img:size()

Get image dimensions.

image.img:turn_left

img:turn_left()

Rotate image 90° counterclockwise.

image.img:turn_right

img:turn_right()

Rotate image 90° clockwise.

image.img:turn_upondown

img:turn_upondown()

Rotate image 180°.

image.img:width

img:width()

Get image width.