Allied Vision Technologies MF-145B2 Instruction Manual download pdf (Page 152)

Marlin Technical ManualV.2.7.0

152

Controlling image capture

Deferred image transport is especially useful for multi-camera applications:

Assuming several cameras acquire images concurrently. These are stored in the

built-in image memory of every camera. Until this memory is full, the limiting

factor of available bus bandwidth, DMA- or ISO-channel is overcome.

HoldImg mode

By setting the HoldImg flag, transport of the image over the 1394 bus is stopped

completely. All captured images are stored in the internal ImageFiFo. The cam-

era reports the maximum possible number of images in the FiFoSize variable.

Model Memory Size

Marlin F-033 17 frames

Marlin F-046 13 frames

Marlin F-080 7 frames

Marlin F-131 4 frames

Marlin F-145 3 frames

Marlin F-146 3 frames

Marlin F-201 2 frames

Table 74: FIFO memory size

Note



Configuration

To configure this feature in an advanced register: See Table

108: Advanced register: Deferred image transport on page

208.

Note



• Pay attention to the maximum number of images that can

be stored in FIFO. If you capture more images than the

number in FIFOSize, the oldest images are overwritten.

•The extra SendImage flag is set to true to import the

images from the camera. The camera sends the number of

images that are entered in the NumOfImages parameter.

•If NumOfImages is 0 all images stored in FIFO are sent.

•If NumOfImages is not 0, the corresponding number of

images is sent.

•If the HoldImg field is set to false, all images in

ImageFIFO are deleted. No images are sent.

• The last image in the FIFO will be corrupted, when simul-

taneously used as input buffer while being read out. Read

out one image less than max. buffer size in this case.

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Allied Vision Technologies MF-145B2 Instruction Manual Page 152